http://www.scconsumer.gov/complaint_services.htm
I had to make a complaint one time. The owner of the business actually wrote a letter of apology and gave me a 200% refund.
South Carolina is very good about consumer complaints. If your military, maybe a complaint to some folks on base is in order? Possible black listing by the base could take place??
Was there a communication issue between the business and the customer?
That's shady work that could have gotten someone hurt. The owner of the car should file a complaint !
Good luck..