I work for circuit city as an installer, and I can tell you that, that is a huge load of $hit. They did not want to do the work on your car. I would go back to that circuit or take it to another and have it done the right way!
Jason
00 Audi S4, 2.7 Bi-turbo quattro

01 S10 Xtreme, 4.3l
98' Contour SE with some mods
96 Cavalier (beater)