Ever gotten money back from a machine shop?

Had a ( malfunction) with a machine shop years ago. Not auto related. Explained to owner the problem. He listened without a word, and replied " wait a minute " and left the room. When he returned he handed me the check that was made for payment and explained "when something leaves our shop you shouldn't have to mess with it , you owe nothing". I tried to at least pay for the materials involved ( not labor) , but he said "no".
Absolutely the best shop experience that I have had.
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