Poor service through Miway to backyard Pannelbeater causing damage to car

We gave our Toyota 86 car in through Miway and received such inferior quality work that we only collected the car after 3 attempts. The 1st time there was a second hand light filled with moist replaced. The second time there was additional scratches on the car which was not there before and on the 3rd time we collected the car on a cloudy day so we could not see the white patches in the paint on the silver. On a Sunny day we could see the white patches. We took the car back this morning and they said this back yard dealership has another owner. We took the car to them and they said they have all kinds of fairy tales about the cause of the white patches but of course it is not their fault. We will never take a car to HJ Bosch Collision Repair Centre again and also cancel our policy through Miway