My bfs freinds where being nasty to me for no reason

So basically weve been talking for a while now and I’m close freinds with his cousin and we were on a app called house party and they all joined our video chat so they came on the chat and started being rude to me calling me a basic bitch saying he would only use me for a fuck these are his female freinds by the way then they where saying if I moved to the same area they would run me out the place and so on I just don’t get why they where being so mean they also said I copied the same shade of lipstick as his ex baring in mind I don’t know who she is and I haven’t seen her then I said he rings me everyday and she said he rings me everyday to asif it was a competition why are they so mean