The AZ Dept of Real Estate (www.azre.gov) governs statutory items (i.e., the law). The Arizona Association of Realtors governs code of ethics and general conduct among those holding the "Realtor" title. Many times something may appear inappropriate to one party even though nothing inappropriate or illegal has actually taken place. I would caution you about filing a complaint with the Dept of Real Estate unless you are really convinced that something ILLEGAL has taken place. If it is simply an ethics issue, that's something that generally should be addressed between agents.