AutoNation Chevrolet Laurel

the engine work was completed but not in the time that Chevy indicated. I dropped the car off (clean) on July 4th to be returned at the end of my vacation on July 16th. On the 14th I called to see if my vehicle would be ready and the service rep could not give me an answer nor could he provide with information on a loaner. This was a warranty repair. I found out Monday morning at 7 am that my vehicle was not ready. Chevy provided a loaner for which they went over with a fine toothed comb for any scratches, provided stringent rules for the loaner. I returned the loan at 4:30 that evening unscathed. My vehicle looked as if it had been parked under a large bird rookery and was greasy on the exterior. I promptly complained. They provided me a voucher to go get an auto car wash at the nearby Exxon. Not exactly equal service from the service department. This was the 3rd time I have had poor to non-existent service with Chevy in Laurel.