I been away for a week and now that I have come bk my friends are not talking to me not answering the phone when I ring I really don't know what I have done wrong please help

You need to find out from them - if something is truly going on. Don't ask someone who knows someone who knows someone. Go to their residence. If they do not answer the door, write them a letter and ask what is going on. If you really do not get a response, find new friends, as how worth it are these people?