Nelnet Student Loan Complaint

Nelnet Student loan department,

Non-federal student loan Dealing with my lender or servicer Don't agree with fees charged Minnesota

I graduated from the University of - - in -/-/- and consolidated my loans with Nelnet. I now make payment for the private portion of my loans to Firstmark Services and Nelnet for the Federal. ( I believe they 're one in te same ) I was to receive a 1.00 % interest rate reduction after 48 months of ontime payments for my private loan. I was to receive a reduction to my federal loans also which I finally received after fighting them on it! I have always made on payment for both loans. For some reason they are saying that for my -/-/- payment it was received on -/-/- and therefore late and I do n't qualify for the private loan discount. They changed my due date a few times throughout the period. I do n't understand why I qualify for one and not the other? Most Likely because it was originally a $61000.00 loan and they collect more Interest. If you look at my repayment history you will see I have been very diligent about payments. In fact I 've never missed a payment on anything in my life! Especially this loan. After over 11 years of payments my balance is only down to $44000.00!!! I feel completely cheated that they wo n't honor the interest rate discount. They wo n't provide me with proof of the payment invoice showing the date. The payment was made electronically. I need help resolving this matter. I feel taken advantage of by this lender.