What to do when your family highly pisses you off ?

i fukn hate my family sorry to curse but i can't help it. m 17 gonna b 18 in sept. but seems like i never grow up in this family even if i want to. My report card cme n i didnt do so hot on ap bio..so who does my mom call up..my bro..perfect angel..who in college..n puts him on speaker n he already has parental timing set to my pc which logs me off at 10 each night n now he's like "o her failing is cuz of the time spent on the PC..wen m home im gonna take off the internet definitely" n my mom's like "yea u shud ..she's never off of it.." like wtf b4 she use to complain dt im on da computer too much n dnt do stuff around da house like help her out inda kitchen and dt if i did she wud neva complain n so den i started to help out alot..do everything all she had to do was cook i'd clean up always...n now she changes her mind ..so i screamed at her while he's on speaker like who df is he to say anything n y the hell she tells him everything that happens wit me..n she goes he's part of this family n i was so mad dt ihad to say no he's not he's not shiit n she's like remember one thing i will never stop telln him everything n if u get pissed i cud care less. I HATE THIS ***** FAMilY I SWEAR! while my dad's home y df she goes to him all the time ugh i need help b4 i explode!