Laundry

It depends on their attitude when they realised there wasn't enough money. Taken for granted or really sorry? If the former I'd ask for the money up front in future. If the later I'd give them a second chance.

I think you're right to be annoyed. You were doing them a favour. They knew you were coming and should have had the money ready. If you decide to help them again tell them you have to have the money upfront.

I think it would be different if you had picked up the washing for an individual. As it is a charity, possibly wo/manned by other volunteers, I'd say that, if you can- be patient this time, but ask to speak to person in charge and explain you just can't afford to wait from week to week.

Yes, agree with aggie - give it another chance. But if there's any repeat of this find another charity to support that's got its act together.

Ask for the money up front next week , and get this weeks at the same time

Bit irritating - can you manage till next week without the £15? If you can I should just accept it gracefully as a genuine mistake.

Pick the washing up. You will get your reward in heaven. (And, hopefully, your cash next week)

Could it be a genuine mistake?