<human>: I will try to keep the history short. I haven't seen my dad in over 3 years and in the past year and a half I have made every effort to try to go see him (he only lives 4 hours away) but he doesn't respond to texts or phone calls unless he feels like it. My last attempt thanksgiving 2014 ended in him saying come for 2 days or don't come at all after I had said I was free for four days, but their house was "too dirty" for me to come for all of the days. 

My dad is remarried to an evil, passive aggressive woman I have bent over backwards for over ten years to be friendly and love. Finally after getting a text on my birthday in March, I got a text last week from my dad, after zero contact,  asking me to text my step mom happy birthday. 

I finally had enough and told him that I would never speak to him or my step mom again if he didn't start respecting me like a daughter by answering my messages and trying to make some sort of effort to at least call me once in a freaking while. Well I haven't heard shit in nearly a week and I can't say I'm surprised, but I am so devastated. I know you can't change people, but now I know I may never see him while he still lives.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: dad made no effort in our relationship and I finally gave him an ultimatum, now I fear I will never see or talk to him again while he is living.