Wells Fargo Student Loan Complaint

Wells Fargo Student loan department,

Non-federal student loan Dealing with my lender or servicer Florida

I co sign a private loan with Wells Fargo, I have paid over -, - towards the private student loan. Out of all the money i have paid I still owe more that what the initial loan was for. The loan was for - and I owe -. I have paid over -. The loan was taking out -/-/-. I started repayment -/-/-. This is unfair to how much interest I 'm paying and nothing is being applied to the principle balance. They will not allow me to lower the interest rate after several attempts.