Service failure from this Company called A1 Auto

In 2016, i bought a vehicle which at the time it was Peugeot 5007 in cash, 2 days later i started to experience some problems with it. I then took the vehicle back to them and the try to fix it. it was on going thing almost every week this vehicle is back to them.. I then decided that i don't need this vehicle not anymore because of these issues with it. to cut the story they called me to show me another vehicle Chev Captiva. i then drove it first day i notice gear problems and electronic issues, like engine management light, left side mirror indicator broken, left hand outside handle broken. all to find out that this vehicle was involved in accident and they never advise me about it. front grill is falling apart gear problems . I have reported all of these issues to them and the always come with excuses till today its a year and half without any assistance from then.. All this time i asked for my money back since day one