Denying pick up for repairs and poor response

We bought a vehicle from JMC. On the 25th we contacted Dries asking for the radio's code as we didn't receive this nor the car's service book. We also told him that there is a noise in the engine. He then said that his mechanic will be calling us back. On the 26th of November at 12.00 we contacted him again, he said he would call back in an hour's time. Just before 16.00 we emailed him saying that we've had no call from him nor his mechanic. He then called back after 16.00 saying that we must bring the car back in as it is still under warranty. We contacted him Monday the 30th to make an arrangement to take the car in and asked for a loan car as we are based in the East Rand and it is quite a drive. He said that he couldn't give us a loan car but would leave a message for the owner SJ to call us back regarding the request. On our way home on the 30th the car started overheating cause the fan stopped working. When we called him today the 1st of December to arrange a tow in, he said that the towing is up to our insurance, not him (with whom the warranty is).. I've tried calling him on his cell and his phone is not off neither is the owner available. CPA states, we have 6 months...