A complaint may be filed with the Board against an Appraisal Management Company, a Controlling Person, or a Designated Officer on a form approved by the Board or by other means of transmitting such allegations and supporting documents by any aggrieved person. Such complaints must be in writing and must be signed by the complainant. In addition, where reasonable cause exists, a complaint may be brought directly by the Board.
Okla. Admin. Code § 600:35-1-4