Avis, PAY BACK THE MONEY!!!

While waiting for my car to be repaired, my insurance organized for a courtesy car with Avis. I returned the car on the 17th May 2018. I was advised my money would be "unfrozen" within a few days. Fast forward to the 31st May 2018, I call the Polokwane airport branch (where I took the car) and communicate with Hendrick Napo, who then escalates to ********** Rose Mashiloane responds and advises that "our bank will confirm any funds held on your card. Within 24 hours, a further instruction will be sent to your merchant to release these funds back into your available balance. For you to gain access to these funds, pleae allow for a 24 -48 hour turnaround time". 6 June: The balance is still frozen in my account, I send an email and later call. I spoke to Tanya from the customer care center, who then tells me they haven't received a response from my bank but she will escalate it now and that I should talk to my bank. Talk and say what to my bank? I did not need to talk to my bank when they were reserving the money, why do I need to do so now that I need it? No accountability whatsoever and I just keep getting passed on to the ext person without any valid explanation. To why my insurance burdened me with Avis is beyond me!!!!