I must tell you that I am one of those people who like to stir up an anthill and I would be likely to say something such as, "I guess you don't like the quilt ... just give it back, then."
I allow for certain circumstances and I know there are people who really appreciate a gift, but who can not or will not acknowledge it. If I know this to be the case, I don't say anything ... I allow for certain idiosyncrasies ... we all have them. BUT, on the other hand, if someone is just rude, ungrateful, or is a "me, me, me" person, I really like to take him/her down a peg. It is so satisfying!
Of course, when the gift is for a child, I would never say a word, no matter how ungrateful the parent(s).