Funds not reimbursed

I returned the Hyundai i20 vehicle (of reference number : ***) on the 22/05 at the Avis Gautrain drop-off zone, but my deposit fee has been reimbursed into my account.<br> <br> Upon collection of the vehicle, the consultant advised me that if I need the funds to be reimbursed quickly, I need to pay cash. Which I did but I have not received my money besides endless calls to the call centre