It’s my friends birthday this Friday - now I volunteer in a charity shop on Fridays. A cpl of weeks ago I asked her if she wanted to do something that day because if I had enough notice I could swap my day. She said no - she was going to go out with her DP. All good til this week - he has let her down and she’s asked me to go for lunch with her. If I don’t go to work at the shop that day they literally won’t be able to open as there won’t be enough stafff. I’ve offered to go out on Friday evening with her but she seems to think as it’s a voluntary role then I can just bail out at any time . I feel really bad - but if every volunteer let people down it would be chaos . Who is being unreasonable ?