OPINION
This is аn appeal from a judgment dismissing appellant’s complaint filed against the City of Phoenix. The complaint alleged a discriminatory assessment of sales and use taxes and double taxation. We conclude that appellant did not exhaust its administrative remedies prior to filing suit against the City in superior court and, for this reason, the trial court properly dismissed the complaint.
Appellant is a Phoenix business that sells various items, such as food, beverages and cigarettes through coin-operated vending machines. An audit conducted by the City Treasurer concluded that appellant was liable to the City for $8,087.08 in taxes. In a formal assessment letter, appellant was advised of the liability and told that it could either pay the tax or pay it under protest and request a hearing to challenge the assessment. Following a meeting among appellant, its accountant, the City Treasurer, the City Auditor and others, appellant’s assessment was reduсed to $5,091.82. A hand-delivered letter of May 28, 1977, advised appellant of this decision and again informed appellant of various administrative remedies available to it. The following day, May 24, the City was served with the complaint, which had been filed on May 17. The complaint, in three counts, sought: (1) that the sales tax assessment against appellant be declared void, illegal and unconstitutional, and asked the court to enjoin its assessment; (2) that such assessment be declared void аs an illegal and unconstitutional tax on a tax and enjoined; and (3) that the assessment of the City’s use tax be declared void, illegal unconstitutional and enjoined.
The City requested, and received, additional time within which to respond and filed a Motion to Dismiss the Complaint. The Motion was based on two grounds: (1) the unavailability of injunctive or declaratory relief against the assessment or collection of taxes, and (2) the trial court's lack of jurisdiction in light of appellant’s failure tо exhaust its administrative remedies. The Motion was granted without discussion by the court and judgment entered. This appeal followed.
Section 14-29 of the Phoenix City Code provides a procedure for a taxpayer to challenge his assеssment. A taxpayer may appeal an assessment by filing a petition for a hearing with the City Auditor within 30 days after receiving a formal assessment notice. “The petition shall set forth the reasons why such hearing, correction or re-determination should be granted and the amount in which the tax (penalty or interest, or both) should be reduced. The City Auditor shall promptly consider the petition and shall grant a hearing, if requested.” Id At the hearing, the taxpayer may be represented by cоunsel and has the right to present witnesses and evidence on his behalf. Phoenix City Code § 14-29(g) further provides in part:
After payment of any tax, penalty or interest under protest verified by oath, a taxpayer may bring action against the Collector in the Superior Court of the County of Maricopa for the recovery of the tax, interest or penalty so paid under protest. The action shall not be commenced more than twenty days after the order or decision of the hearing officer or designee is received by the petitioner, and failure to bring the action within such twenty days shall constitute a waiver of the protest and a waiver of all claims against the City arising from the alleged illegality in the tax, рenalties and interest so paid. No grounds of illegality of the tax shall be considered by the court other than those set forth in the petition filed with the City Auditor, but payments of taxes made under protest subsequent to the original protested item аnd prior to filing the action within the twenty days may be included or incorporated into the same action.
*493
Under normal circumstances, the provisions of section 14-29 must be followed before an action can be brought in superior court.
See Univar Corp. v. Phoenix, 122
Ariz. 220,
Appellant first argues that it is exempt from the general rule requiring exhaustion of administrative remedies because it was lulled into a belief that administrative review would not be required. This assertion is based on the affidavit of Mr. Art Kaufman, president of Valley Vendors Corporation, which stated, in part:
On May 11, 1977, he [Kaufman] and Clark Wellеver, a Valley Vendors employee, had a hearing with the City Treasurer, City Auditor, City Auditor’s Supervisor, and another individual who at this time he does not recall, wherein he (Kaufman) advised the City he did not agree with the assessments, and intended to institute suit to oppose them in their entirety. The City Treasurer thereafter stated or clearly indicated to him at that time that no further administrative hearings nor payment in advance would be necessary if such suit was instituted.
An affidavit was filed by the City Treasurer that denied making this representation.
Appellant has not directed our attention to any authority for the proposition that the City Treasurer has the power to waive the codified law of the City of Phoenix. We have reviewed the City Code аnd can find no grant of such authority. Section 14-29(c) does allow the City Auditor to extend, in his discretion, the time for filing a petition for a hearing. Beyond this, the Code is explicit in requiring that there be compliance with its established administrative procеdures. For these reasons, we reject appellant’s “lulling” argument.
Appellant next contends that it was not required to follow the city’s administrative procedures because such procedures may be avoided, and judicial relief immediately sought, when a taxpayer complains of a taxing authority’s discriminatory practices and when administrative procedures are inadequate. Appellant’s contention is based on our supreme court’s decision in
Southern Pacific Co. v. Cochise County,
Appellant’s statements that the City’s tax hearings are an improper forum for its constitutional claims and that the hearing officеr is unqualified to hear these claims is no more than a bald assertion that is wholly unsupported by the record or legal authority. Section 14-29 contains no language limiting the nature of the issues that may be heard by the hearing officer. The basic issue to be tried is whether the taxpayer has been illegally taxed. See Phoenix City Code § 14-29(g), (e). The questions included within this issue can be wide-ranging and could very well include constitutional challenges. For this reason, appellant’s reliance upon Southern Pacific and McCluskey is misрlaced. In these two cases, the issues that could be presented on appeal to the superior court were so limited that the taxpayer was left without a remedy for any other question he might raise. Under section 14-29, howevеr, there is no limitation upon the grounds that the taxpayer may present to reduce or correct his assessment. As long as he asserts these grounds in the petition, they are preserved for an action in superior court. Phoenix City Code § 14-29(g>; Univar Corp. v. City of Phoenix, supra.
We acknowledge that, under certain circumstances, the exhaustion of remedies rule is inappropriate.
See Univar Corp. v. City of Phoenix, supra.
“These are cases in which the remedy is permissive under the authorizing statute; in which jurisdiction of the agency is being contested; in which the agency’s expertise is unnecessary; or in which irreparable harm will be caused if the rule is followed.”,
id.
Because we decide that the trial court properly declined to exerсise its jurisdiction to hear appellant’s complaint, we need not pass upon the issues appellant raises regarding whether it could ask the trial court to grant declaratory and injunctive relief. Appellant also asserts thаt section 14-29 of the Phoenix City Code is unconstitutional. This assertion is unsupported by argument or citation of legal authority. We therefore treat this issue as abandoned.
See Modular Systems, Inc. v. Naisbitt,
The appellee has made a request for an assessment of аttorney’s fees for a frivolous appeal pursuant to A.R.S. § 12-2106 and rule 25 of the Arizona Rules of Civil Appellate Procedure. We deny this request. In view of the fact that the questions raised by appellant were ones upon which reasonable persons could differ, we cannot say that appellant’s appeal was frivolous or taken solely for the purposes of delay.
See Barrett v. Melton,
*495 We conclude that the trial court’s dismissal of appellant’s complaint was proper and, therefore, affirm the judgment.
