what should i do?

Friends are always there for you. No matter what. So, If they are not treating you like a friend, then there are not your friends.

You can only try so hard to be a friend. If they don't accept your effort, they really don't want to be friends.

It is said if you find one true friend in your lifetime, the rest don't matter anyway.

I agree friends shouldn't do that, but before you decide that they aren't you friends tell them how you feel. True friends would listen and try to stop.