Insurances need to stop using Avis

I returned a car at the airport on the 6th of Septemver 2025. Till today, I have not received my deposit. On the 25th of September I call and spoke to Sandile Sehume who told me there was an error cz of invalid banking details and I must send my card number. The same card number that they took when I got the car,and they were able to take the deposit from it. Now they dont have it. The fact that they did not even realise this error and I have to keep chasing after my deposit is so frustrating. I had a couple of issues with Avis Newton park during the process of getting the car and upgradez not getting my deposit just tops it off.