Happens all the time I'm afraid, for many different reasons. The only advice I can proffer is to insist on arranging meets through Shrep. If they're reputable then they will have no objections. If they're not then you get to give negative feedback if they don't turn up.
NB: As this isn't a chat issue I'm going to shift you into Let's Meet Up. ;-)
Sadly this sort of thing is becoming more frequent. I had a meet last night, I'd got an invite to a gangbang in Derby, about hour n half drive, I turns up meets the lady and her husband sat chatting and waiting for the other guys to turn up. When I left no one else had turned up or even rung to cancel. I none the less went home with a smile on my face.