ITAW for feeling owed infinite gratitude and graciousness for even unwanted gifts/donations?

It's not quite reciprocity, but more specific than that.

I'm thinking of the thing where donors will get angry at charity recipients for being "ungrateful" if the recipients don't bend over backward in response. Like the people who get angry that their donations of used boxers or high heels get rejected by the winter clothes drive. Or the ones who think that if you receive government assistance, you shouldn't be allowed nutritious or tasty food, only the cheapest of rice and beans. Or the ones who donate outdated moldy textbooks to the library and then lose their minds when the library recycles them. It's "beggars can't be choosers" taken to an extreme, often about people who weren't actually begging. Is there a specific term for that thing?