My husband rang my mortgage lender last week to go thorugh in detail the status of our mortgage as we are thinking of moving. We have overpaid on the mortgage for over a year now by €750 pm. We assumed that as this money was directed in the the mortgage account number that it would be allocated to the account however, our mortgage lender has told us that it wasn't, in fact it has been sitting in an overpayment account and has not reduced the capital. I'm really annoyed about this as we've paid interest that we shouldn't have and I assume the bank has earned interest on our money as well. Is this normal practise. Any advice as to what I should do. In the process of writing a letter to them to explain. Any advice would be greatly appreciated.