In September, I got a call asking if I could play at the Legion on November 5th. Sure, see you then.
Yesterday I was driving through town and noted that the name on the sign wasn't mine. A few phone calls revealed the guy who had done the booking had screwed up. I said they should let it ride, as the sign was up and the posters were in place.
Two hours later the phone rings again. The other guy can't play. Could I make it?
Yeah. Don't forget to change the sign.
Glad I didn't throw away the play list.

I know this happens to some people all the time. My wife says she probably would have told him to go F himself, but life is too short and the town is too small.
How do you handle other people's screw ups?
Best
Les