Chambersburg Automatic Transmission

I had a radiator replaced at Chambersburg Auto Transmission, and whithin 400 miles of driving, the car began overheating and leaking coolant. When I called to inform them that I suspected there had been an air pocket in the cooling system (which any reasonably good mechanic should know to purge after opening any part of the cooling system) which caused the overheating, the manager on duty denied any responsibility, claiming I had somehow caused the damage.
I was not looking for a free fix for a new issue, nor did I lead him to believe I was. I simply wanted to know when they could look at it to determine what the cause of the new issue was. He vehemently continued to deny responsibility for the issue (I never accused him of being at fault) and refused to look at my car until the following week.
Not only do I think Chambersburg Automatic Transmission is employing irresponsible, corner-cutting mechanics, but I believe they must run into this type of issue commonly, due to the managers overly-defensive position when asked about the new issue.
I would not recommend going here for even a simple oil change, much less any extensive repairs. 0/10 - Don't waste your money here.