Damn, my story is relatively mild, then.
Basically, we were slated to play one of those local metal shows, like 10 bands. A week or two before she sends us a message saying she has to postpone the show because the guy who won Rockstar INXS wanted to play The Silo on that day.
Now, I could have told her she was going to lose money because nobody is going to pay what, $15 to see some douchebag who couldn't cut it in an 80's pop band, and she was going to have to pay out a big guarantee to this schmuck, while at least with the local metal show she could break even or maybe turn a little profit. But, I figured it wasn't my place, I kept my trap shut and smiled, said no problem, we'll be glad to play anytime you want us to.
It's 4 months later and she hasn't returned one e-mail, one query, nothing. We even offered to put a deposit down in case we didn't draw enough heads, and I haven't heard a thing from her. From what I am reading now, I should be glad I haven't.