Long delayed refund and no communication

we bought a car at the dome on the 1st June 2023... 2 weeks later we found out that the vin nr on the car and disc don't match even the engine nr so we took it back and they attempted to give us another car but that failed. We then requested a refund on 16 July 2023 and they told us they will pay within 72 hours.... Till this day we have not received the refund or any update on the the payment progress. Sales person koketso no where to be found, 2nd sales person Mohamed is not picking up our calls and Jane always promises to get back to us and never does. Now i wonder if we will ever get our money back.... And the money we spent on roadworthy which was rejected and the car disc