I cant stand my dad, i hate him!?

So my parents are divorced and they HATE each other. although my mother is more conciderate. my father has gotten drunk infront of me twice and he has bipolar disease so ....all i know is they DO NOOOOT mix well. i have never gotten abused physicly but emotionaly i am severly damedged, he followed me around the house and i grabbed my cell phone locked my self in my room and called my mother she didnt answer so i came out of the room and he was sitting about 2 inched away from the door. he said "nice fake cry." and i ran away sobbing my step mom knew what was going on infact she had locked herself in her room. when i ran down stairs (him following) she cam out and sat us both down. i was telling her what he said and what he was doing and the whole time my dad just kept saying "your a liar. i never did that. Sophie STOP LYING!" i kept sobbing and then she told me "sophie maybe you misunderstood him." i said "Ashley how could you say this?!" then she wwent and locked herself back in her room. then i ran away (him STILL following) i ran out to the porch and called my mom about 6 times. finally she answered. she came picked me up and i was fine. but i will never foreget that (that was the second time) i will never foreget what he did to me and what my step mom did. its been about a year. he went into the hospital and almost DIED because of him drinking. he still has bipolar and i am still scared of him but he has been sober for about a year.