That you think they should do something they're morally obligated to do (because of something unsolicited you did), when you think they're obligated to do it; but then they don't and just ignore you and your sensitive feelings and your cultural imposition; means unkind to you in that instance.
And I noted that on those times they don't give gifts to just any people. If you happened to give a little gift to them sometime in the past, notably Christmas, for whatever reason, they have no obligation to return a gift to you. A gift isn't a loan to be repaid.
Round and round and round. You must be getting senile.
For the 5th time, it doesn't matter if they do, and I don't expect them to, for reasons already explained.
Irrelevant, as we're not talking about "relationships" at all. The maids in the condo mean nothing to me, and I mean nothing to them. Giving them a trivial Christmas gift doesn't change that. So I don't expect, need, or want gifts from them ever in return. They know that. I'm sure most people here agree and feel the same.
In personal relationships with actual friends and partners, you'd expect some kind of reciprocity.
I think you're about ready for help to get out of yet another of your bickering loops.