Europcar not refunding Full Deposit.

I'm very unhappy with the service received from Europcar, Oribi Airport, Pietermaritzburg. ***). I was given a rental vehicle due to an insurance claim. Upon delivery of the vehicle, I was requested to pay a refundable deposit of R 2500. The vehicle was returned to Europcar, Oribi Airport, Pietermaritzburg on 19 December 2024, and as requested, with a full tank of petrol and washed. I was told that the refund will take between 5 and 7 days. To my utter disappointment, a refund of only R 1391.80 was paid to me. Upon querying this, a shortfall of R 1108.20, no one at the Europcar office could give me a breakdown of this shortfall. I was told on Friday, 27 December 2024 to expect a call from Mervin Pillay on Monday, 30 December 2024., who will explain all to me. Needless to say, no call received. I phoned again, speaking to Thuli. I requested to speak to Mervin Pillay, just the be informed that he is on leave. When requested to speak to a manager, Thuli informed me that there is NO responsible person there currently, no manager or acting manager. She promised to get Mervin to contact me, and as at 11h15 on Tuesday, 31 December 2024, still no call. This is shocking. I strongly recommend that you steer away from Europcar when considering a rental vehicle. It seems that this fight to get my R 1108.20 short refund is just starting!