What do you do when your friends have rejected you?

It doesn't sound like they are really friends.

Find new friends.

I define friend as a mythical person that would do you no harm.

Put a curse on them. Mwuhahaha

Answer by giving a fingered gesture, PM (pap smear them), hit them with a white board, and confess that they are stupid for rejecting this Elegant Person, then I block them.

I find new friends......true friends won't do that to you.

(Haha. I may understand...) In highschool, it was like, I stood by a common group of friends, and I do thank them for letting me stand with them, but I believe I did not talk with them truthfully. I did not express myself to them because I did not agree with them. In a sense I rejected them, but I felt rejected by them. For me, I just kept hanging out with them, but I also made other contacts around the school and other places, so I could have more social agreement.
At college my dorm mates never invited me to anything! I hated them... I just rebelled against them by doing my own thing. Maybe if you tried that you'd become stronger in yourself and begin to make new unique friends at some point.

True friends will always be there for you, if your friends have rejected you then I would say they aren't true friends and I would let it go. Get out there and make new friends.

Find new ones

This happened to me in my early twenties. Lost all my friends because of something (someone actually) that I did.

It's a time to re-invent yourself without anyone having pre-conceived ideas about who you are. Re-sort your priorities, decide your life's path. That's what I did. I hurt for losing my friends but looking back it's the best thing that could have happened.

if months have gone by and you've attempted to communicate without any response, then find a new path to take. They were not real friends if they aren't willing to listen to what you are trying to tell them