Well... sort of? I sent my grandfather a second letter along with his 'Thank You' card at Christmas time, explaining everything and assuring him that it was totally fine to contact me with questions and stuff via e-mail, phone, etc., but received nothing of the sort. Come late May, my mom called him, asked if he would want a ticket to my graduation, and he just blew up on her, called she and my dad horrible parents, yakkity yak like that. She just told him off, and when he tried sending us a letter in the mail, she threw it out and told him never to contact us again. So. I guess it started out as ignoring and pretending I'd never sent the letter, but eventually became something else.
I think at some point, anyone that "ignores" your identity and pretends it doesn't exist is bound to either blow up or be blown up on, most likely by you, for disregarding your feelings.