Refund

I booked a car online and paid for it then when I went to fetch the car at Cape Town Airport I was told that they can't give me the car, whomever/ wherever they confirm my card from said No. there's no clarity as to what is the reason exactly. Then I opted to cancel the booking on Saturday 28th, I spoke with a call centre agent Name Gift, who then informed me that his manager Cedric said he can cancel the booking then I will have to call on Monday and speak with customer service. This morning 30 April I spoke with Abraham Lubisi from customer service who then told me that I booked with Rental Cars and I should contact them, I explained to him that the only thing I got from Rental was the insurance which was very easy to cancel. however I still called them and they did not have any of my information as I didn't book the car through them. I called back at Avis and spoke with the same agent who then told me that they will have to escalate this to Avis Euro and the waiting period will be 7 to 10days just for them to confirm whether the booking is made on Avis website or not. then the refund will also take another couple of days. I am very upset with the poor service that Avis has and I need this to be resolved as soon as possible.