Mercury Car Painting

I gave my WHITE Audi A4 for painting the front and rear bumpers. When I got it back the paint didn't match at all and I was told that I had to pay another Rs.3000 for polishing that would apparently get the paint to match. Also they didn't paint the bottom of the bumpers at all and blamed it on us asking for it to be ready fast which we didn't. It is pretty much evident that a much brighter shade of white was used instead of off white. I had already polished and WAXED the car a month ago and they gave me this excuse. Not what I expected from a paint shop with such reputation.