I wouldn't be that bothered to be honest. Mistakes happen. I'd give them a call and ask why and if they said it was a mistake then I'd believe them. No one got hurt. I didn't mean to belittle anyone's upset (although I appreciate it might sound like that, so apologies) it's just I think we all need to be a little more forgiving of genuine mistakes. If they cause damage then that's another issue. However, that's happened to me before. I just fixed it. Well done for raising funds though!