Disgusted!!!

I took a car to Vanos Tech that I was wanting to purchase, just for them to check if it was a good buy. From the get-go, it was made very clear to me that I would be making a big mistake if I purchased the car, so I decided to pass on it. They proceeded to tell me that they had a Mercedes-Benz in their yard that they can sell me. I was advised that it was mechanically sound, had all the bells and whistles, blah, blah, blah. A few mechanical issues were sorted out, but after purchasing the vehicle for R150 000.00, the car kept cutting out in the middle of the road and the engine light kept coming on. They found that the auxi****y battery was not working and replaced that at their own cost. But, after going there for a number of weeks for the engine light, they kept running diagnostic tests on the vehicle and advised that there was nothing wrong with the vehicle. I have now paid R1000 for an independent company to run a diagnostic test for me and there are a whole string of things wrong with the vehicle, and that the vehicle had been in four accidents. When I took it up with David, he advised me that they are not a panelbeater, so he couldn’t advise me of that information. You’re not a car dealership either, yet you are selling cars!!! I am trying to get rid of this vehicle and I am getting offered between R30 000.00 and R65 000.00. Vanos Tech is avoiding all correspondence and not willing to assist in this matter.