Sani Sandton Branch Manager shoddy selective feedback, still no refund!

I booked a car with Sani Sixt Sandton branch on 29 August, returned it on 05 Sept and they still havent returned my deposit. I used a virtual card with them, which they allowed but now I am being sent pillar to post and still no money. The branch manager got involved when i had extended my rental but when i brought the deposit issue to his attention it has been crickets. None of the people at the branch that got involved followed up, Blaine said he would send a form and nothing was sent. The branch manager didnt even bother to call back after I brought it to his attention. They keep telling me the monies were kept on a hold status, well they need to release them back or issue out an eft refund. its that simple. they have no empathy of trying to think outside the box if the bank is not being helpful due to a virtual card use, which is absurd.