I'm under 18. What is the easiest way to get fraud items off credit report all at once? READ B4 ANSWER HELP!!?

I am under 18 years old and I have things on my credit report. When I call the companies and say fraud they act like they don't know what I'm are talking about. I live in Minneapolis, MN and need some istance on how to get them off all at once. It should be a way where I don''t have to pay a lawyer. And I don't need a phone number that has an answering service and they never call back. Please Help!!!!!!!!!!!