Fifth Third Bank Mortgage Complaint

Fifth Third Bank Mortgage department,

Home equity loan or line of credit Loan servicing, payments, escrow account Wisconsin

I have a - mortgage with Fifth Third Bank. I pay more than the min payment each month. I also send in a small payment after I make my primary payment for the month. I specifically write both on the memo line of my check and on the mortgage statement principal only ''. Every time I do this Fifth Third Bank applies my extra payment to principal. I then have to go through the exercise every month of calling them and making them reverse it. I do n't understand why if the loan is current and the payment has been made I can not make a principal only payment.