(a) To file a complaint with the commission against a regulated person or another person alleged to have unlawfully engaged in conduct regulated under this subchapter, a person must:
(1) have personal knowledge of the alleged violation;
(2) complete a complaint form provided by the commission;
(3) sign the completed complaint form; and
(4) attach any pertinent documentary evidence to the complaint form.
(b) On receipt of a properly executed complaint, the commission shall furnish a copy of the complaint and any attachments to the person who is the subject of the complaint.
(c) This section does not preclude the commission, an advisory board of the commission, or a court of this state from filing a complaint.