JPMorgan Chase Mortgage Complaint

JPMorgan Chase Mortgage department,

Conventional adjustable mortgage (ARM) Loan servicing, payments, escrow account New Jersey

I paid additional money over the past few years that was supposed to pay down my principal. Instead, Chase kept the money and called it an advance payment. After several complaints they finally applied my payments as principal but they did so effective just this past month, when I actually made the payments years ago. I need them to make the payment effective retroactively and reimburse me for my interest that they overcharged me during the past few years. I am also waiting for a detail of all my payments made. I need the accurate new principal amount made immediately so my arm, which readjusts in -/-/-, has the correct new payment, which will be lower than what they are charging me.