Key pmb is the worst place to buy from

We had bought a car n picked up just before lock down and was told and agreedto bring in the vehicle for cosmetic touch ups, but little did we know we were headed for drama. Within a time frame of six months we had the following problems : tyre sensor, shocks broken, several water leaks, TURBO broken , and wiper blades broken and car passed COR not sure how. We have drove the car more to take it for repairs than to use it personally. Who can help me please i need to return this car and the manager from key pmb is saying itz now our problem because we bought the car.