(a) The commission shall maintain a system to promptly and efficiently act on complaints filed with the commission. The commission shall maintain a file on each complaint. The file must include:
(1) information relating to the parties to the complaint;
(2) the subject matter of the complaint;
(3) a summary of the results of the review or investigation of the complaint; and
(4) the disposition of the complaint.
(b) The commission shall make information available describing its procedures for complaint investigation and resolution.

(c) The commission shall periodically notify the parties to the complaint of the status of the complaint until final disposition, unless the notice would jeopardize an undercover investigation authorized under § 1101.204.