BAD SERVICE FROM AVIS

i RENTED A CAR WITH AVIS VEHICLE FROM 16 APRIL TO 6 MAY. ON 14 MAY 2018 WHEN I CALLED TO CHECK WHEN ARE THEY PAYING MY DEPOSIT WAS TOLD THE MONEY WOULD BE IN MY ACCOUNT THE NEXT DAY AND THE MONEY WAS NOT THERE. I CALLED AGAIN THEY TOLD ME ITS THEIR MERCHANT (NEDBANK) THAT IS NOT RELEASING FUND THEY HAVE RELEASED THE FUNDS ON THEIR SAID, FORTUNATELY I AM BANKING WITH NEDBANK AND NEDBANK REFUSED AND TOLD ME THAT THEY ARE NOT TELLING THE TRUTH. I HAVE BEEN SENT FROM PILLAR TO POST JUST TO GET BACK WHAT BELONGS TO ME. I AM EXTREMELY DISAPPOINTED AND I DO NOT KNOW WHO TO TALK TO.