Maaco Collision Repair & Auto Painting in Lancaste

I took my 94 mustang in to be painted. They spray painted it the same color as the factory color. I did not have different options explained to me. I was just told that they were not very busy so they would give me the ambassador package at a discounted rate. He told me to keep it waxed. Three years later, I started to notice that the roof looks different than the rest of the car. It looks dull. I have been told that it is oxidizing and it is because of the way they painted it. I took it back twice. They are not willing to help me. The franchise is under new ownership. They said they would be willing to repaint it but I would have to pay for it. I am voicing this in hopes that other people will take warning before choosing Maaco to do their painting.