Terrible service

I paid around R7000 for a Mac Wheel which i didn't receive instead Mercedes Benz Constantia Kloof service department ordered a wrong wheel. I asked for my refund which I was told would be processed.

I sent my bank details but it's been a month no refund. I have bought from another dealership. I have been calling this dealership but they keep dropping me off or giving me a run around. I have read other reviews about this dealership... People complain about terrible service.. . I need my money urgently please!!