Shocking customer service

I bought a 2nd hand BMW from this crowd. After 150 kms the engine warning light came on and the car went into limp mode. Quotation from BMW dealer came to R78000, 00 to fix the vehicle. We buy cars claimed I had bought the car via auction WHICH I DIDN'T! They wanted nothing to do with my problems. I offered (before the quotation was obtained) to return the vehicle and buy another one from them in lieu. They refused to assist in any manner and stopped all communication with me. Take extreme care when buying from this crowd. I won't recommend anyone go near them!