It shall be an unlawful practice for a person or for two or more persons to conspire:
provided, however, that it shall not be a violation of this article for anyone to challenge or resist any action by the administrator, any of the administrator's representatives or employees, or a hearing officer when there is a good faith belief that the administrator, the administrator's representatives or employees, or the hearing officer is acting unlawfully or acting in excess of statutory authority; or
OCGA § 45-19-45