Im Being Emotionally Abused , Please Help!?

Well,both of my parents drink...heavily ....they've split up now...but ive gone through very similar things. and actually had my mom put in detox one weekend for pulling a knife on my step dad in front of my younger sister & myself. so, 'ext time he flys off the handle at u or ur grandmother i would either call the cops or leave & take her & 7r cat with u ...its not worth the misery...just in case ur wondering i dont talk to my mom...just my dad whose chilled out...& my 3 sisters.who r glad for what i did.