Pathetic Service from Amanzimtoti - Avis

I am absolutely disgusted with the service received by the Amanzimtoti Avis branch. I had a rental with them and returned the car in the same conditions as I was given on the 19.03.2018. I was promised by Avin the gentlemen that assisted me, that I will get my refund (deposit) within the next 3 to 5 working days. This never happened. When I called him he told me he will query it with his head office and get back to me. Needless to say he never did. I called him again and he told me that my refund declined and that I gave him the incorrect banking detail, which was not true because he confirmed with me telephonically that the banking details where correct on the form I filled in when I picked up the car on the 17.02.2018. I called in again and spoke to a lady Slie and she informed me that the refund takes 6 working days. I called back on the 03/04/2018 and spoke to Slie and at this point I was really frustrated, She assured me she will get back to me. About an hour or so she did call but I missed her call and called back and she put me through her branch manager Vicky who was very apologetic and told me he will get back to me with feedback. As expected he didn't and I called back today and was told that the money will be in my account within 3 working days. I was forwarded an email as confirmation of their story. As I scrolled down I was absolutely disgusted to read the comment of the branch manager and I quote "This customer is driving me to drink, when will he get his money". This is how one is treated by Avis. It is taking them 11 working days to refund my money. As for the branch manager do not call someone and apologies if you going to make such comments. Never again will I use Avis and I will be sure to tell everyone I know about this.