These consolidated appeals challenge the grant of summary judgment awarding American Security Bank money allegedly due on two promissory notes which Jerry C. Spellman executed and a third note which he guaranteed, on the ground that genuine issues of material fact exist regarding whether the bank’s claims were barred by the statute of limitations. The bank contends that summary judgment was proper and that Spellman cannot raise the defense of the statute of limitations to the guaranty for the first time on appeаl. We reverse.
I
The bank sued Spellman on August 4, 1981, for breach of contract to recover money due on three promissory notes and a Covenant Not to Sue. Two notes, dated May 8 and 20, 1969, were for $200,000 each plus eight percent interest. After Spell-man experienced difficulty in paying these notes, the bank sold the pledged collateral and notified him that the principal balances on the notes had been satisfied, but unpaid interest remained due. A third note for $270,000 was executed on March 6, 1970, by Action Enterprise Corporation (Action) and guaranteed by its owner and Spellman. Pursuant to a Memorandum of Understanding, dated March 5, 1970, the bank could demand payment of $200,000 immediately upon the availability of funds or ninety days from the date of the note, whichever was earlier; the remaining $70,000 in principal was also subject to demand immediately upon the availability of funds or eight months from the date of the note, whichever was earlier. Nine months later, in December 1970, Spellman and the bank signed under seal a Covenant Not to Sue. In Mаrch 1973, pursuant to a second Memorandum of Understanding, the bank waived its claim against Action, and a month later Spellman signed a Consent and Authorization whereby the bank agreed to dismiss a lawsuit against Action’s owner on the condition that it preserved its rights against Spellman as guarantor.
Spellman asserted eleven defenses in his answer to the complaint, including the statute of limitations, fraud, failure to prosecute, and laches. Following discovery, the bank filed a motion for summary judgment. The bank’s Memorandum of Points and Authorities recited its efforts to collect the notes, including a 1977 lawsuit in Virginia against Spellman and his wife, and Spell-man’s alleged avoidance of service until December 1983. It attached a statement of material facts as to which there is no genuine issue, as required by Super.Ct.Civ.R. 12—I(k), as well as bank documents and correspondence, and affidavits of two vice presidents of the bank.
Spellman opposed the motion for summary judgment and also filed a cross-motion for dismissal under Super.Ct.Civ.R. 41(b) for failure to prosecute. Hе argued that the notes and the Covenant Not to Sue were unenforceable because he had established a prima facie defense of fraud. He relied on his deposition testimony with respect to the circumstances under which he was allegedly induced to sign the guaranty, and his Rule 12-I(k) statement in which he set forth facts to show why the bank’s claims were time-barred and barred as a result of its failure to prosecute. He also claimed, relying on his deposition, that the guaranty was without consideration. His Rule 41(b) motion was based on the bank’s alleged lack of due diligence in instituting the instant action, which was filed five years after his last payment on the notes, and in which he had not been served with *1122 process until twenty-eight months after the complaint was filed. The Rule 41(b) pleadings were incorporated by reference in his summary judgment papers.
The bank filed a response contending, first, that Spellman’s failure to refer to the Covenant Not to Sue in his opposition to summary judgment constituted a concession of liability; second, that there was adequate consideration for the guaranty; 1 and third, that the statute of limitations on the 1969 notes did not begin to run until July 31, 1975, at the earliest and was tolled because Spellman had “assiduously avoided service” from 1978 until he was served on December 27, 1983. The bank attached a second affidavit from one of its vice-presidents (Lewis) and accompanying documents in support of the latter contention.
The trial court granted the motion for summary judgment, without reaching the issues of the tolling of the statute of limitations and the enforceability of the Covenant Not to Sue. The court also denied Spellman’s cross-motion to dismiss for lack of prosecution.
II
“Summary judgment is an extreme remedy which is appropriate only when there are no material facts in issue and when it is clear that the moving party is entitled to judgment as a matter of law.”
Willis v. Cheek,
If a movant has made a prima facie showing that there is no genuine issue of fact in dispute and it is clearly entitled to judgment as a matter of law, the opposing party may prevail only if he rebuts the showing with specific evidence.
Wyman v. Roesner, supra,
*1123 III
Expiration of the statute of limitations is a question of law, but certain facts must be determined before the question of law can be reached.
See Calvin v. Calvin,
In contending that Spellman intentionally and continuously avоided service of process so that the statute of limitations was tolled until he was served on December 27, 1983, 2 the bank relies on Spellman’s deposition testimony that he traveled a lot, and on the affidavits of its vice-president (Lewis affidavits) which recited the bank’s efforts to serve Spellman. It also contends that Spellman is estopped to raise the statute of limitations as a defense because the bank was lulled into inaction when he agreed to enter into settlement negotiations in the Virginia litigation. In rеsponse Spellman relies on his statement of material facts in which he denied evading service, and attacks the Lewis affidavits as hearsay and thus not in compliance with Super.Ct.Civ.R. 56(e). He also claims that he did not imply a promise to pay by entering into settlement negotiations in the Virginia litigation and therefore is not estopped to raise the statute of limitations as a defense. We hold that the bank has failed to demonstrate as a matter of law either that Spell-man evaded service of process or that its claims on the 1969 notes are not barred by the three-year statute of limitations.
Super.Ct.Civ.R. 56(a) requires that “affidavits shall be made on personal knowledge, shall set forth such facts as would be admissible in evidence, and shall show affirmatively that the affiant is competent to testify as to the matters stated therein.” The first Lewis affidavit contains conclusory assertions about the bank’s efforts to locate and serve Spellman and fails to recite specific facts or refer to documentary evidеnce. The second Lewis affidavit refers to the bank’s interoffice memoranda about its efforts to serve Spell-man and to a letter and report from the special process server about his efforts to locate and serve Spellman. The affidavits do not set forth facts which would be admissible in evidence since some of the assertions are hearsay. Although the bank’s memoranda may be admissible under the business records exception to the hearsay rule,
see Gabrielian v. Gabrielian,
Although Spellman would be es-topped from asserting the statute of limitations as a bar if he had “done anything that would have tended to lull [the bank] into inactiоn and thereby permit the statutory limitation to run against [it],” no estoppel arose if there was sufficient time for the bank to act once the circumstances inducing delay ceased.
Property 10-F, Inc. v. Pack & Process, Inc.,
The record does not resolve whether Spellman otherwise lulled the bank into inaction by concealing himself for a sufficient period of time to protect the bank’s claims on the 1969 notes. Until the bank filed the instant lawsuit against Spellman in August 1981, it made no attempt to serve him. Further, in connection with this case, two attempts were made to serve Spellman in August and September 1981 (the process server noted on an alias summons that it was difficult to gain access to Spellman’s apartment building), but no other attempt was made until late September 1983, when the bank notified the process server that it wished to resume attempts at service. The process server’s first two efforts failed. On one occasion he could not gain entry to Spellman’s apartment building, and on a second try he gained entry but received no answer when he knocked on Spellman’s apartment door. The bank then instructed the process server to suspend efforts for one month. Spellman was eventually served at his apartment on December 27, 1983. Thus, while pursuing its Virginia strategy, the bank suspended attempts to serve Spellman for more than a year, thereafter made no attempt to serve him for a second year, and suspended its efforts to serve him for more than two years after filing the instant lawsuit.
Because there remained questions about whether Spellman evaded process by absenting himself from the District of Columbia, summary judgment on the 1969 notes was improper.
International Underwriters, Inc. v. Boyle,
The bank’s contention, relying on
Kron v. Young & Simon, Inc.,
IV
With respect to the guaranty of the 1970 note, Spellman argues, contrary to the bank’s assertion, that he claimed in the trial court that the guaranty was barred by the statute of limitations. He relies on his Rule 12—I(k) statement of material facts in dispute (paragraphs 7, 8 and 9), 4 his memorandum in support of his motion to dismiss for lack of prosection, and his answer to the complaint. Spellman’s memorandum in opposition to summary judgment asserted, in conclusory fashion, that the bank's memorandum in support of summary judgment misstated the facts and avoided the real legal issues. It focused primarily on the bank’s failure to meet its burden to establish the validity of the guaranty. However, his attached Rule 12—I(k) statement asserted that “all causes of action are time barred,” and also referred to additional grounds on which the bank’s various claims failed. Although the assertion in paragraph 8 refers directly to the 1969 notes, Spellman cited in support of it his Rule 41(b) pleadings, which applied tо all of the bank’s claims, as he noted in paragraph 7. *1126 In paragraph 9 he referred to the bank’s delay of more than ten years in filing suit. Further, in paragraph 10, 5 referencing his deposition, he asserted that he did not attempt to evade service of process and, since at least 1974, had resided at the place where he ultimately was served. His memorandum in support of the Rule 41(b) motion argued that the bank “offers no justification for its failure promptly to institute a cause of action,” because it was undisputed he had resided in the District of Columbia since 1969, and service could have been made, according to cases he cited, on the resident manager of his apartment complex as well as by mail under Super.Ct.Civ.R. 4(d)(3).
A basic rule of appellate procedure is that a party may not raise on appeal issues which he failed to raise below.
Miller v. Avirom,
This case is distinguishable from
Kron v. Young & Simon, Inc., supra,
in which this court, in affirming the grant of summary judgment on statute of limitations grounds, noted that appellant had not filed an opposition to the summary judgment motion.
V
The bank contends that it is nevertheless entitled to recover under the Covenant Not to Sue, which is subject to a twelve-yeаr statute of limitations. D.C. Code § 12-301(6) (1981). The construction of a written agreement is a question of law when its provisions are unambiguous.
Rich v. Sills,
The Covenant Not to Sue was dated December 21, 1970, and was under seal. It stated that the bank had demanded payment of $200,000 on the guaranty, but that since payment had not been made, the balance of the note had bеen accelerated. It also recited that Spellman had asserted, and the bank had denied, that he had certain defenses to his liability as guarantor of the note. In consideration of Spellman’s “willingness to compromise and adjust the amount of his liability as an endorser and guarantor of the Note ... and to collateralize his obligation to the bank as compromised and adjusted,” the bank agreed to adjust Spellman’s obligation under the third note to $220,000 plus interest of nine *1128 percent from March 6, 1970, until the compromised sum was paid in full. Spellman was also to pay all of the outstanding interest on the third note on the date the Covenant was executed and, beginning January 1, 1971, to pay interest monthly and $220,-000 by July 1, 1971, or earlier, as sufficient funds became available to him. He made two assignments of additional shares of stock to the bank “to secure the prompt performance of his obligation” under the Covenant. The Covenant also provided that as long as Spellman complied with its terms, the bank would not initiate legal action against him. Finally, the Covenant stated that it was not designed to release or discharge any person under the guaranty, and that the bank could “continue to carry the note in a matured and delinquent position.”
By its terms, the Covenant Not to Sue was more than the acknowledgment of a prior debt. Although Spellman contended in opposition to the motion for summary judgment that the Covenant Not to Sue was not consideration for the guaranty, he admitted that by the Covenant he had received a partial release оf his liability under the guaranty and that the bank had obtained a sealed document. Accordingly, we hold that the Covenant Not to Sue is subject to a twelve-year statute of limitations, and that the bank timely filed its claim under it. Upon remand the trial court shall determine whether Spellman has asserted a defense which, if proved, would entitle him to prevail on the bank’s claim under the Covenant. 10
Reversed and remanded.
Notes
. The bank also referred to three documents in which Spellman had acknowledged the guaranty: Memoranda of Understanding of August 7, 1972 and March 19, 1973, and a Consent and Authorization of April 17, 1973.
. D.C.Code § 12-303(b) provides:
When [a resident of the District of Columbia] absconds or conceals himself after the cause of action accrues, the time of his absence or concealment may not be computed as part of the period within which the action must be brought.
. In
Stevens, supra,
we referred specifically to the last sentence of Rule 56(e) and the Advisory Committee Note to the corresponding federal rule, pointing out that "[w]here the evidentiary matter in support of the motion does nоt establish the absence of a genuine issue, summary judgment must be denied even if no opposing evidentiary matter is presented.”
Although the court may accept as true the movant’s Rule 12-I(k) statement of facts or other verified facts if they are not countered with specificity in a timely fashion,
Milton Properties, Inc.
v.
Newby,
. Paragraphs 7, 8, and 9 of Spellman’s Rule 12—I(k) statement of material facts as to which there is a genuine issue read:
7. Defendant’s Cross-Motion for Dismissal challenges the enforceability of the Guaranty on the grounds that Mr. Spellman was improperly induced to sign the Guaranty and that all plaintiff’s claims against him are barred by the plaintiff’s failure to prosecute. Memorandum of Points and Authority in Support of Defendant’s Cross-Motion for Dismissal for Failure to Prosecute.
8. The plaintiff has no cause of action for the interest on the Notes of May 8, 1969 and May 20, 1969 as all causes of action are time barred. Memorandum in Support of Cross-Motion. Plaintiff has no cause of action on the Guaranty because Mr. Spellman was improperly induced into signing the Guaranty and Plaintiff has waived its rights by failing to prosecute.
9. The plaintiff made no effort to prosecute this action between 1971 and 1981. The complaint in this case was filed August 4, 1981.
. Paragraph 10 of Spellman's Rule 12—I(k) statement reads:
10. Mr. Spellman did not attempt to evade service of process. Mr. Sрellman has lived at the Watergate Cooperate [sic ] Apartments since at least 1974.
. This rule reflects "considerations of fairness to the court and the parties and of the public interest in bringing litigation to an end after fair opportunity has been afforded to present all issues of law and fact.”
Miller v. Avirom, supra,
.The hearing on the motion for summary judgment focused primarily on Spellman’s defenses to the guaranty, which the bank characterized as the most important debt. In responding to the judge’s questions, Spellman’s attorney called the court’s attention to his pleadings in opposition to summary judgment, including Spell-man’s deposition. He also referred to the fact that two of the notes had been executed twelve years ago and the third had been executed eleven years ago, while admitting that Spellman and the bank had been negotiating at points before the instant lаwsuit was filed. The judge agreed to review Spellman’s pleadings in opposition to summary judgment before ruling.
.
See also Wittlin v. Giacalone,
. D.C.Code § 28-3504 (1981) provides in pertinent part:
In an action upon a simple contract, an acknowledgment or promise by words only is not sufficient evidence of a new or continuing contract whereby to take the case out of the operation of the statute of limitations or to deprive a party of the benefit thereof unless the acknowledgment or promise is in writing, signed by the party chargeable thereby. This section does not alter or take away, or lessen the effect of a payment of principal or interest made by any person.... An indorsement or memorandum of a payment written or made upon a promissory note, bill of exchange, or other writing, by or on behalf of the party to whom the payment is to be made, is [not] sufficient proof of the payment so as to take the case out of the operation of the statute of limitations.
. In view of our disposition, we do not address Spellman’s other claims, including those with respect to alleged errors in the award of damages.
