I lost my paternal grandfather. I wrote him a separate letter alongside my 'Thank You' card for the Christmas money he'd sent me; I never heard from him after that. My mom, about a month ago, called him asking if he was going to be attending my graduation/needing a ticket for the ceremony, and he started going off on her about what terrible parents she and my dad were for supporting me, how I was just trying to get attention, and was just imitating Bruce Jenner (because I totally didn't come out before that whole situation came to light or anything...sigh).
Luckily my mom didn't have any of it, told him he was a horrible person (esp. to my father, when he was a kid), offered him some choice profanities and hung up. He tried to send a letter to our house a while back and my mom didn't even open it, just tossed it in the trash. We're all in agreement in this household that he's as good as dead, since his love has clearly been conditional to myself and my father our whole lives. Good riddance, as far as I'm concerned; all my other family's been nothing but beautifully supportive, and they're who I should really be spending time with, anyway.