Abysmal Service - Not paying back deposit

This is now the second time that I am struggling to get my deposit back from this company. The fist time it took 3 months and numerous emails. This time I returned my car on 30 January. I queried about my deposit on 16 February. About a week later I received an email stating , I need to send them proof that I paid a deposit. You cannot make this up. I send them an email with a screenshot of my credit card proofing I paid a deposit. It has now been more than 3 weeks and absolutely no response or any communication from them. I send this email to customer service , Mini Lease and the CEO Ganda Ramasela. Absolutely no response. Looking at the other comments about this company , they should be legally and forensically investigated for ***** and shutdown. Avoid them at all cost. As somebody who regularly rent cars , I will never make use of them ever again.