|(a) Any person with cause to believe that any provision of the Act or PBB Rules have been violated may file a complaint with the department. The department will accept either oral or written notification, but all complainants must sign and date a complaint form prescribed by the department. The complaint must set forth in detail the facts of the alleged violation. (b) The department will prepare a written report for all complaints for which an investigation is conducted. (c) The department's report will be provided to interested parties upon written request to the extent provided by Chapter 552 of the Government Code. (d) The department will not estimate monetary losses sustained. (e) No finding of violation by the department will be premised solely upon uncorroborated statements, or upon the complaint of an anonymous or unidentified complainant. (f) The department will determine the extent of investigation that is appropriate to address each particular complaint.