Had an issue caught on my camera in my car of 2 pe...

Had an issue caught on my camera in my car of 2 people from service abusing my car and playing around in it while operating it. Service manager at the time refused to accept responsibility for his teams actions. Said no harm was done even though Im sure there wasn't as much tread on my tires when I picked it up. Had to go to regional customer service and it even took them 2 weeks to get the service manager to call me back. Absolutely unacceptable . I prefer not to have my car beat on by your mechanics.