Northland Group, Inc. Student Loan Complaint

Northland Group, Inc. Student loan department,

Non-federal student loan Dealing with my lender or servicer Keep getting calls about my loan Colorado

The Northland Group on behalf of - continues to call. When I miss their call I call them back and they ask me to verify my address. Every address I give them does not match up so they will not give me any information on what is going on. This either fraud or a scam. This is effect my credit score any they are refusing to give me information because I my address is no the address they have on file and has never been a place I have ever lived. I can validate - and any other identifying information. They are withholding information from because lack of knowledge of an address I have never lived at.