12 Pa. Code § 11.7
(a) A person authorized to file a complaint with the Department under section 8211 of the act (relating to petitions for declaratory orders and complaints to department) may file a complaint at the office of the Department within the time limits prescribed in section 8211 of the act.
(1) Complaints shall be by letter or other writing, typewritten or legibly printed, as required by 1 Pa. Code § 33.2 (relating to form) and this chapter, and shall contain the following:
(c) Upon the filing of a document purporting to be a complaint or petition in the office of the Department, a determination will be made by the Department as to whether the filing constitutes a complaint or petition and whether it has been timely filed.
(1) If a determination is made that the pleading, as filed, is insufficient to meet the requirements of a complaint or petition under the act, a further determination will be made by the Department, in its discretion, whether to: