Is it permissible to exchange a promissory note (document of deferred payment) for its financial value, while paying interest to the bank, due to financial hardship?

Replacing a promissory note with an immediate cash payment of its equivalent value is selling a debt for cash, which is impermissible. This is because it is an exchange (sarf) with a delay (nasi'ah), and one of the conditions for sarf is mutual possession (taqabud) in the same session. Additionally, there is an element of uncertainty (gharar (definition)) due to the lack of certainty that the person will receive the amount of the promissory note.