Arizona Department of Real Estate (ADRE)
Investigations Division http://www.azre.gov
2910 N. 44th Street, Phoenix, AZ 85018
Realtors subscribe to a "Code of Ethics", if the property manager is a "Realtor" you could also file an ethics complaint against them. The path you take could depend on what the issues really are, if it is illegal the ADRE will get involved and the Realtor Associations might as well. If its issue are unethical but may not rise to unlawful you could take the path of the ethics.
Sorry to hear of the challenges you are facing in this situation. I happen to be a property manager and a Realtor myself.