Try putting ya prices UP !!!
I know that might sound stoopid, but a builder mate of mine had a simular problem, thought goin in cheap and offering a good job would win the work.
After a chat with one of his other builder mates who told him to up his prices, Doubled them !!!
Work started coming in, now he hasnt looked back !
Look at it this way, if a reputable bodyshop is quoting 2k+ for a rub down and respray, and you go in at 1k tops, people will automatically question the quality of your work. untill people see the fruits of your abilitys you have nothing to prove how good you are.
Word of mouth, greatest advertising tool EVER !