There has got to be more information than that. Did they make it right? did you talk to the service manager? or did you blow it up and blame it on the dealer? More information is needed than what you have provided.
I brought my car in to get timed now there are 4 valves sitting in cylinder 4 i drove the car in. they said i brought it there with them sitting in the cylinder and they will never admit that i drove it in there. The tech even drove it in the bay You can read full post here