I called him to fix a spring and he broke my opener motor when re-attaching it. It got ripped off the wall first and then he cursed up a storm at Wayne-Dalton (manufacturer) and ended up splitting the metal plate when he angrily used a bigger and longer lag screw. I believe he knew he had at least cracked the plate because after taking my check he got in his truck and left (went to another job) before the garage door had been reset. The plate broke by that evening and the motor was just stripping the bar because ge broke it. I sent him pictures through email, text, and talked to him on the phone. I gave him a chance to make it right as a business professional, I asked for less than half of the cost it was for me to replace it. I wanted to give him a chance to make it right, but he asked why I didn't call him to replace it? I'd compare what he did to me like lighting a firecracker and running away.