VERY BAD PAINT JOB ON MY CAR

I took my 8 month old car to H J Bosch and Sons because they are AUDI approved, they look professional but be careful. On collection of my car they parked the car under a carport and I had to ask them to move it in to sun light. The paint Job was not good at all they could not match my original car colour, I then took the car home and everybody could see the bad paint job. I took the car back and showed them the difference in colour, they then booked it in again but they still could not get it right. I am very unhappy with there paint Job!!