I don’t blame you for being angry about that.
One of the local Legions here was having financial difficulty last year. It’s a decent room with a stage/PA so my band and some friends decided to put on a few events.
A friend set up a Sunday afternoon 3-5 jazz series with various local bands (including us) rotating through every second Sunday. Admission was by donation to the musicians and the Legion would benefit by selling more drinks than usual.
First time we played, I booked my band for a Saturday night 2 months in advance. The deal was we would charge and keep a cover. Normally we just get paid a fee by pubs, but the Legion is struggling...
I confirmed with the guy in charge a week later and he told me he wrote it in the calendar. So we do our usual promotion stuff on FB, talk to people about saving the venue etc.
Second time we play the Sunday 3-5 thing, it’s a month before the Saturday we booked, and as we’re packing up, I say to another guy there “See you on May 26”. And the reply is “what? We have a fundraiser here that night”
It turns out the other guy just scratched out our name and booked another event. I try to be a “peace, love, and understanding” kind of dude, but that really pissed me off!
So much for supporting our local Legion.
Our friend went in to book the dates for the fall and they wanted him to change ithe Jazz Series to 2:30 - 4:30 to accommodate their 5pm Meat Draw. He has put money and effort into promoting it as Sunday 3-5 jazz, so he’s now looking at a different venue.