STILL WAITING FOR DEPOSIT REFUND- UNACCEPTABLE

I regularly rent vehicles through Europcar using the Discovery Discount. I even gave Europcar a great rating after this rental until this happened: I rented a vehicle in Cape Town from 10 - 17 November. I received my invoice on 18 November stating a refund of R 9386.59 was due to me ( I had paid a very substantial deposit of R 12,358 when I collected the vehicle )

I usually get my deposit back within 2 days . It is now 6 days later and I have still not received the R9k+ refund. Is this a Europcar tactic ??? Take an extremely high deposit and hold on to it for longer .

I have called 6 times today and am still waiting to speak to someone who can assist. First call 17 minute wait after getting through to switchboard, Second call was a 10 minute wait, then 3 attempts where I couldn't even get through ..then to add insult to injury , i call again - by now I am very angry and get put on hold for a whopping 46 minutes when I eventually had to drop the call because of work commitments. This is beyond unacceptable and there is zero customer service or commitment. interest should be paid to me with my deposit as they have deliberately held on to my funds.