My friend hates me and hates is turning every on on me?

i there were 4 of us we were close friends ( bri,christy,caprice, and me sidney ) ok we were good friends in till one day bri just decided hey lets see how long we can go without talking to sidney and she got them all in on it ( it went on for 2 days ) after 2 days i felt really bad i felt like a loner later that week they just started insulting me being all mean so i had no friends at all i felt like a loner. later she was nice agin and then we were friends ( this was a long time ago) ok now i am in like last week (they hated me ) agin ) i was a loner agin and friday they mad caprice hate them so she came over there with me and now where good friends but bri still insaults me todaycaprice was sick and not at school and i talked to christy and we became friends agin but she and caprice still hate her and now bri is hate all of use for no reason at pls tell me what to do