Accident damaged pre-owned cars

They sold accident damaged car. Since day of collection car has been giving me problems, I took it back to them in January 2021 they claimed to have fixed it.. since the car has been giving me problems.. I spend alot of money trying to device and fixing that car close to R100 000 untill it gave up and killed engine . Now am paying for a car I don't have for 2 years of complaining still no help from them. Nonsense dealerships but I won't let them get away with it