Serious family/stalker issues what can we do to be free? i'm suffocating getting trapped by the minute plz hel

even though my parents are seperated my dad is still always calling my mom asking her where she is and who she's w/ even if she's at home he's done this his whoel life and even if my mom doesn't like this she's not the type tp stand up for herself. and my other question is wut do i do about it cuz he even does this to ME. i feel like when i'm on my own he's gonna bother me liek crzy and not let me do wut i want and be free. and my dad isn't an easy person to stand up to. any normal person is afraid of him. he has such a bad temper and when he gets mad he gets mad! he scares the **** out of ppl older than him. he's only like this w/ me my mom and bro and faking mr. nice guy to every1 else so every1 likes him even though they know how he is and no1 wud support me so wut do i do i don't wanna live under sum1's control 4ever i don't ever wanna see him again either he's treated me lyk**** my hole life i wanna b free of him 1 day but then again HE SCARES THE **** OUT OF ME plz help! i'm tra