Avis company *****ing customer money

I hired a car where I had to put down R1200 deposit that I would get back at the return of their vehicle in peefect order which I did in the 10the of August 2015 on this day I asked for my cash refund deposit but Avis insisted on depositing it to my bank account in 3 to 7 working days. On the 28the of August I called again asking for my money and was told to wait a day or two, still it did not come to my account. I went in to the branch in cape town on the 7th of September and was connected telephonically to Miss Musa Mlenzana who again forwarded my banking details to her finance department and committed to the money reflecting the following day because we were both using Nedbank accounts. She could not explain why the money had not been paid back to me but confirmed it was still R1200 as I new it. She promised to call me back the same day and I took her email address where she is just reading my messages and ignoring to respond. Till date I have not received my money and am 40km away from the branch where I left my money as deposit. This is bad service where a big company like Avis will desperately still money from a small person like myself and will not do business with them Eva.