Hi and thanks for your letter.
Friends shouldn’t make you feel awful and call you names and this is a form of bullying. It sounds like things have been difficult since you got back from you exchange.
I’m wondering if you were closer to either of the friends, and if you would be able to chat to that person alone and ask them what has changed whilst you were away.
If they continue to be horrible to you it may be an idea to talk to an adult you trust about how you are feeling such as your parents, or a school teacher.
You could also think about trying to meet some new friends, maybe people who were on the exchange with you or through a club or hobby you are interested in.
Perhaps you could speak to other young people on the ChildLine message boards to see what they might do to meet new friends.
You can get more information around cyber bullying on the ChildLine website, it may also help if you are able to come and have a chat On-Line or call 0800 1111 to a ChildLine counsellor.
Take care
Sam