Things just got more complicated

Well my little sister is going on her senior trip, i am so excited but there was drama involved. My mom called my dad for help but as usual, he doesnt come through like a good dad would do and turned to my grandmother, who has enough on her plate and has already put alot of effort into making my sister have an amazing trip. My dad thinking ok everythings okay i helped my daughter, uh wrong dad, you didnt do anything. He thinks now emily and i would start talking again. Wrong! My dad didnt do anything to help my sister, he is always making excuses, when he knows that my mom or i have called him out on his mistakes, he will hide, he wont call , and sometimes he wont answer his phone. I talked to my grandma last night and she said he tried to email me , nope never got one, so it was a lie. It really hurts me that my dad just doesnt get it, everything he has done, i'm never going to forget it, i may not even let it go. My dad ran out on me, my mom, and sister for another woman. My dad called me a slut in my own home and i didnt even dress bad. I was little and playing dress up. My dad has shown up to my house eyes blood shot. My dad has missed out on family get togethers claiming he was sick but really he was drinking. I dont understand why my dad thinks , if we dont talk for a few months, everything is okay with us. It isnt. My dad never had my sister and i every other weekened, we never stayed with him on the holidays, he didnt want us for the summer. I've told him, i would give it another shot if he was willing to make the effort, but he hasnt. I've had phone conversations with my dad and i ended up crying and handing the phone back to my mom. The way he talks to me, i started getting mad with him on the phone telling him the way he talks to me and the things he said and he said "see your getting an attitude again" , um i have every right to, my dad has never taken responsiblity for his children why should i be nice to him? i was crying on the phone and he said i was getting attitude? I had a dream like a week ago and my dad called me a litte f*** , it was terrifying. I see my friends with their dads and it makes me wish i had one, well a father who loves his children. My dad always teased me, compared me to an ape, when i was young i told my dad that if anything were to happen to him, i would miss him and he laughed at me. I remember i stayed with him for the weekend, and he scared me so bad, i had to call my mom to tell her to come get me. I think my dad thought he could get away with the things he did because me and my sister were little and didnt understand but i'm alot older now and i do remember it, i do know what he is like now. The plan backfired for him. He tries to make me feel guilty by saying hes a bad father, and he 'll hope i will tell him he's wrong but i dont say that. I just want my dad to leave me alone.