WE BUY CARS bad service

My dad bought a secondhand ranger. The vehicle had problems starting, they said it was due to standing but soon after we found the diesel pump was broken. Expensive to fix. Did that and took the vehicle to testing station to get vehicle on my dad's name, just to hear that the engine is not the original and has no clearance, they can't put the vehicle on his name. Then the engine completely packed up! Vehicle was bought 21 December from Midstream branch and they are not helping to get the thing sorted. We bought from them as we thought they are a reputable big dealer. The sales agent’s name was Duvan and the person who is supposed to handle the case is Wynand P. I also phoned to try to help but I keep getting put thru to Wynand P and he there is no answer. When my dad did get a hold of him, he said he would get back to us, he did not. We also spoke to Albert van Jaarsveld with same result. Surely, they should take it back and give the money for the vehicle and expensive back!