A family who I'm friendly with. It's a series of things: asking for lifts (and never even offering to pay petrol, when minicabs are easily available), taking a very expensive item which we were selling and not paying anything, having their kids party in the park and not providing any food other than a packet of crisps per child, and nothing for the adults. No entertainment either or party bags. I even bought the drinks for everyone! Now saying that I can't use their compost bin, which I had previously paid for, as I didn't pay this year's contribution in time. I've been working a really demanding job, and honestly I thought after everything they wouldn't quibble over a few pounds. I think find the imbalance here quite grating. Aibu?