Not releasing my deposit

I've returned the Avis car last week Wednesday and was advised by the reception that the money will be back in my account by the Friday as it was reserved on my credit card I've then asked again on Monday morning where my deposit is and was advised that they will send an email. I've now once again asked where my money is and was again advised that they will send an email. This is not good enough. I want my deposit back. This was an ABSA Insurance claim that made me use AVIS for car hire. I will inform ABSA about the service and no care attitude that I'm getting from Avis and will not stop until ABSA pull all their business and support another car hire company instead. Refund my money today still, you have no right to still keep it, you are *****ing from me at the moment.