Hi, i had exactly the same, 2 inch scratch through the lacquer and paint, i used a company called Chips Away they are country wide, they come to you and check it out and then give you a price and fix it there and then, they use all the modern tech for paint mix and lacquer heat lamps etc they are professionals, when it was done you could not find it and it was in the middle of the door, i had the car for 2 years after that and it was like new. The cost was £140 but you may get it cheaper out your way and i am sure there are other companies that do the same, good luck with it.