Chev Orlando keeps breaking down

I purchased my Chevrolet Orlando from GM Le Roux Motors Kempton Park in Feb 2013. In the first 3 months I had to take it back three times for an engine fault. On and off for the past three years I've complained to GMSA and Le Roux Motors since from time to time my car (still under warrantee) breaks down. Every time they find a new fault. Every time I'm assured that the matter has been resolved. My car was serviced in August'15 (60,000 km service). I broke down a week later. AA towed me to another branch who had to tighten a petrol pipe of sorts to get me back on the road. 17 Dec'15 I broke down again. Le Roux Motors fixed my vehicle and returned it on 21 Dec'15. On 29 Dec'15 my car had broken down yet again. I called GMSA to complain and stated that I wanted them to buy back the vehicle from me. I have not managed to get any feedback from them. The GMSA consultant and I seem to keep missing each other. <br> This morning 4 Jan'16 I returned to Le Roux Motors as the engine light came on whilst I was driving on the highway. I can't afford to get stuck like this. Please will GMSA buy back my car. I've asked Le Roux Motors the same. I have yet to hear back from either of them on this.