Bad customer service with hidden issues

They Sold me a car they new had sensor issues, and disabled central locking. The front right sensor fell off and took it to the nearest mazda, later received a call that followed a further assessment they found out that the car was worked previously and they put back the sensor with glue that mazda uses which is affecting the front camera which is not working hence disabled. When I called the dealership I bought the car from asked for manager Jaco , who asked which car , then I said CX60, he said the white one, I was surprised, that means they new what happened or issues about the car. I collected my car I told the manager they must fix my car am not paying for this. Mind you the car is still under motoplan, but cannot caver is thislooks like some shady job. Jaco promised to call me tomorrow on this matter and said he can send someone to collect the car