When You Pick Up Your Car Review what was done, have the Service Advisor go over each item on the Invoice and explain exactly what was done, and parts used. Get a copy of all inspections done. Do not pay for the work until you are satisfied with the explanations given. Resolve problems immediately. Tell others about your experience.
Good shops depend on referrals.
Resolve problems, don't rush off to another shop. Good businesses understand the value of your business and will go out of their way to resolve a problem. Should that fail, use the channels available to you for third party resolution such as AAA, or the Better Business Bureau. Keep all your vehicle repair paperwork in a file. It's a method of staying on top of your vehicle's needs, and an excellent tool when you sell the vehicle.