Fired from start of job

I was talking to a mechanic who went to the berrydown rd. store in Sudbury for a job. When the interview was almost over the manager told the mechanic that when you work on a car losen something so the customer has to come back. The mechanic refused to do so and was fired before he got his wrenches dirty. The mechanic siad that it was his license that was on the chopp9ng block if he did this and refused to do so. He told Canadian Tire that good service and good work were his signs of good workmanship.
As for parts I was told by a very exelent auto parts store that Canadian Tire has seconds for all auto parts and is why things are cheap!