Refund of holding deposit from We Buy Cars

On Sunday 16 October 2022 I paid a holding deposit of R5000 on a caravan at the Dome branch. This was because the keys were not available and I could not view the caravan properly. There was a clear understanding that the deposit will be refunded if I was not totally satisfied, which subsequently happened and the deal was cancelled on Monday 17 October 2022. I was informed that refund will reflect in my bank within 2 to 3 days. Great was my surprise when I received a call from the Accounts department of We Buy Cars asking me why I have not paid the outstanding amount on the sale. Numerous calls to the Sales person and his manager has not resulted in the money being refunded. The only action taken by them was to change my We Buy Cars account number status from a debit amount to a credit amount.