How to deal with a bad family that hates me so much for no logical reason at all?

My 3 younger brothers are terrible to me and mistreat me every chance they get. They don't have any respect for me and all! I am afraid to come out of my room because I know one of them if not all of them will bully me! They have all even gathered around to each one take turns to say something mean to me (I am crying just remembering this). I am almost 30 & came to live here with them again bcus my father needed some help, financially but I can't take it any longer! He is better now & I am leaving soon but how can I go on living a seemingly normal life after living with such hardcore years of verbal abuse I'd say even mental. They have also hit me hard except the oldest but the 18 year old and 20 year old have both been psychically abusive to me. They all call me terrible names like stupid & dumb bi*ch, lame a$$, idiot, crazy bi*ch, wh0re. The youngest one especially really thinks I am a $lut bcus when he gets mad at me all he calls me is a wh0re, $lut, etc. It breaks my heart that my own "little brother" can hurt me so much! He recently punched me inside my own car (on my arm which is bruised now) when I was driving bcus I demanded that the music volume be lowered as it was horribly loud & I couldn't even concentrate on driving & could've even been pulled over for driving with music so loud. I have gone as far as sitting at a park inside my car by where all the homeless people hang out bcus I felt so low & felt that the homeless people only knew my pain.