Nelnet Student Loan Complaint

Nelnet Student loan department,

Federal student loan servicing Dealing with my lender or servicer Trouble with how payments are handled Tennessee

My student loans were transferred/sold through several different places and I could n't find the company that had bought them. My credit file shows missed payments from -/-/- through -/-/- ( 11 missed payments ). Nelnet had my student loans at this point but I did not know who had my student loans. I called multiple places to try to find where my student loans where, but know one could tell me anything. I also moved from my original residence after completing college. I make my student loan payments monthly since learning that Nelnet had them. The missed payments were not my fault because I did not know where the student loans where.