Does not refund deposit in over 4 months

I paid a deposit when renting a car down in George back in End April beginning of May. <br> TO DATE I HAVE NOT RECEIVED MY DEPOSIT BACK IN MID SEPTEMBER. 4 and a half MONTHS!<br> <br> Europcar insisted they paid me back but I have submitted Bank Statements (which I found a violation of my privacy) and even put their call center agents in touch with the Branch Manager of Standard Bank all of which confirm I have not seen a dime of my R3519.90 refund which was more than the rental agreement to start. No one returns my calls or e-mails now and I am being ignored!<br> Do I need to lay a charge of Theft before someone takes me seriously?