Very upset. My wife brought our car in as the battery light came on, they diagnosed the alternator and replaced it. We had a small leak from an old tube attached to the coolant reservoir and she asked to change this too. She was told the reservoir cap was the issue. I phoned the mechanic and told him I put a new reservoir last summer, don't change it. He said "okay" but when my wife arrived home we were charged a new reservoir, cap and coolant. Didn't change the tube. Took advantage of my wife.