Car dealership

I bought a vehicle April 2023 took delivery May 5th 2023. After 3 days car started giving problems.. Twice gearbox. Then twice engine. 3rd time the engine had to be replaced. Case was at MIOSA. Closing letter stated we were waiting on NEW engine and paperwork for engine and warranty papers on all work done. Got the car back. After 3 days engine gave problem again.. Did not receive paperwork on engine or warranty.. I took the car back to dealership.. An agreement was made for a substatutional deal.. But the sales manager refused. He wanted the car as a trade in.. After 11 months I'm paying for a car that is still at the dealership..