My best friends are leaving me out?

Well im in a group of four best friends me annie ,linda and jennie.But im so fed up od Annie and Linda because they always do stuff without me and jennie and we talked to it about them and they said they were sorry and they would stop but lately they've just started to do it again and its so upsetting,but the worst bit is that Annie comes too me and complains about Linda not confiding in her about who she likes and i just want to yell at her because sometimes it feels like her and Linda don't even want me and Jennie there ,but when its just me and Annie she tells me EVERYTHING and she doesn't tell the other two and she constantly bitches about Jennie even though when i tell her not too be harsh she says no i still love her to bits but.. she says jennies untrustworthy has a big mouth and that Jennie always tries too hard to fit in which i think is really unfair and i tried talking to her about how Jennie feels really upset that Annie doesn't invite her too anything because the two of them used to be really close and Annie said that when it was just the two of them Jennie was really bossy and mean and made Annie just do what she wanted too do which i'm not sure whether i believe .Also we hang out with this group of guys because Annie is dating one of them and they all hate Jennie and say she's really unattractive and when Annie told me they said that i was like i hope you told them they were idiots and she was like no i didn't which isn't what i or any good friend would have done.Also Linda never tells us anything and sometimes it feels like she doesn't like me at all because when were at sleepovers and stuff she acts really cold around me & tbh i'm just fed up of how they behave , what do you think tell me what you think i should do and if there behaviour is okay .am i overreacting.