The purpose of this Part is to prohibit licensees from receiving fees from the State, its agencies and departments, public benefit corporations, municipalities and other governmental subdivisions in this State, or from receiving commissions and fees from insurers or other licensees in connection with insurance coverages placed on behalf of, and insurance services rendered to, the State, its agencies and departments, public authorities, public benefit corporations, municipalities and other governmental subdivisions in this State, in circumstances where such licensees did not actually render services to the governmental units or did not place or service insurance coverages of the governmental units.