Brakes on rear

Purchased 2007 Trailblazer in July 2011 and told salesman about brakes, but he said they were fine. Had to have brakes put on rear on 8-5-11. Doors need adjusted and invoice even says may need adjusted, but never done. Just lubed the doors and charged $13.60 for that when the doors need adjusted. I would not recommend Bell Chevrolet if you need your vehicle serviced. Need brakes on front now and called for price and it went up $100.00 since August.