Absolutely hate 'unappreciative' people who do not share a simple thanks.
I attended a 4 day retreat in a small town in Wyoming, with a well known author and designer of quilts and books as the 'star' instructor. She had never been to Wyoming, and had never seen a moose, until this trip. I went home, purchased a hand-made sterling Moose pin from a local artisan as a gift to her for coming to Wyoming to share her talents with us. I received nothing from her, but I did get confirmation from the Post Office that is was signed for, by her, when delivered. So much for being nice. But I do like the quilts I made at that particular retreat.