unhappy client

I WAS IN A PROCESS OF PURCHASING A VEHICLE ON THE 28TH AUGUST 2021 WITH BBFORD (used) POLOKWANE. I WAS REQUESTED TO MAKE AN R18.000.00 DEPOSIT, WHICH I PAID INTO THEIR ACCOUNT AND THE SALES PERSON BY THE NAME OF THABISO WHOM I WAS CHATTING TO PROMISED TO DELIVER THE CAR THE SAME DAY THAT I PAID THE DEPOSIT. AND HE NEVER DELIVERED THE CAR AND PROMISED TO DELIVER IT IN MAFIKENG AND I WAS NOT HAPPY BECAUSE HE PROMISED TO DELIVER THE CAR THE SAME DAY, HE NEVER UPDATED ME REGARDING THE UNTIL I DECIDE TO CALL HIM, HE SAID WE CAN MEET HALFWAY TO MAFIKENG FROM POLOKWANE AND I COULD NOT AGREE TO THAT AS WAS NOT OUR INITIAL ARRANGEMENT, HE WAS DISHONEST AS HE COMMUNICATED WITH THE SAME THURSDAY OF HIM SENDING ME THE CAR'S PICTURES AND TELLING ME THAT HE IS WAITING FOR A SIGNATURE AND THEN HE WILL DELIVER THE CAR, WHICH NEVER HAPPENED, I DECIDED TO BUY ANOTHER CAR FROM ANOTHER DEALERSHIP THE FOLLOWING DAY BECAUSE OF HIS NON DELIVERY. WHEN I CONTACTED THEM FOR A REFUND THEY ARE TELLING ME THAT THEY WILL REFUND ME AS SOON AS THE CAR IS SOLD. WHAT IF IT TAKES 10 YEARS TO SELL THE CAR? DOES THAT MEAN I HAVE TO WAIT THAT LONG. I NEED ASSISTANCE REGARDING THIS.