A few years back had a guy that didn't want to pay extra for anything then talked one of my guys into knocking the weeds down in the beds next to the house. Of course, he caught the wire to the AC unit. Idiot had a royal conniption that we broke the wire that was covered by 2 feet of weeds. On the one hand, you want to do a little extra for your customers, on the other you get screwed when doing so. We gave this guy a partial refund for the remainder of the season and fired him. I don't recall if it was for this specific instance or everything combined, but it just wasn't worth it.