Can a bank call your mortgage loan? When banks call in a mortgage that is due, the term they often use is "acceleration.". This means that the balance of the loan becomes due immediately. While this could spell financial disaster to a borrower, it occurs only in rare or extreme cases.What is the mailing address for key bank? The address of Key Bank Contact is 127 Public Square, Cleveland, Ohio 44114, United States.What is a key bank account? Bank key. The bank key is an item that allows 10 of the victim's most valuable items, based on Grand Exchange value, to be taken. It can be obtained by killing a player. The player that obtained the key can collect the items by opening a chest in a bank within a low-threat area, which means they must wait till their skull expires or risk being killed...