What do you do if...?

your brother will not let you in his room yet he lets my other bro. in the room. then when i am trying to be nice to him he has some mean or nasty comment? then he says no wonder no you have no firends. and says that the bro. i go to school with always tellls him that i have no friends that i am a dork when i have tons of friends and guys ask me out all the time! some times i would like to slap him and just scream.. but i would get into major trouble. what do i do? like to day i went to ask him sonthin and he immeditly told me to get out before i even got anything out then i am in front of his doorway NOT IN HIS ROOM! and he starts to slam the door so that it might hit my face and i back up (still trying to ask a ques. about hwork.) then he always calls me a sbbitch then he goes and calls HIS dad and says i was in his room kept on tapping him and was doing everything i could to bug him. that was not true then i got on da cell and tld da truf he ddnt belve me! what do i do???????????