Unable to get holding deposit back.

Worst experience with Webuycars Silverlakes.

I was interested in purchasing a VW T-Cross(not an auction vehicle) through finance. I promptly paid the R5000 deposit in order to reserve the car after making sure the deposit is refundable. I paid the deposit the same day without hesitation. I was then informed by the F&I that I can do the finance through my bank because they don't a proxy with them. Even though my bank informed me that they concluded few deals with WBC this year alone. I overlooked this and app**** for finance through WBC. Through this whole process I was not once provided with an OTP or a quote so that I can ascertain the final price of the vehicle, even though I requested it multiple times. The vehicle was advertised for R391 900, obviously there are some extra costs on top of this which is understandable. Finally, the bank approval comes through and still don't have a quote/OTP. But from the repayment terms and amount I can see that the final price almost went up to R430 000. They added warranties and other extras which I didn't agree to. I informed them I will take out a maintenance plan with VW which is a service plan and warranty rolled into one plan. They refused to accept this and insisted on me getting a third party warranty with them. I backed out of the deal as it was not happy with this arrangement. Now it's been over 3 weeks and I still have not received my deposit back. I have contacted the F&I and the salesperson on multiple occasions but no reply. I provided them with the required documents for the refund but still no reply. Absolutely frustrating. How can it take more three weeks to process a refund!