Is it permissible to deposit one's salary in a usurious bank without dealing with it or taking loans from it, due to the poor services of the Islamic bank that the person currently deals with?

An Islamic bank is one whose dealings are governed by Sharia (definition) regulations and rulings, and which is overseen by a Sharia supervisory board. It is not permissible for a Muslim to open an account in a usurious bank except in cases of extreme necessity. The poor services of an Islamic bank are not considered a justification for dealing with usurious banks. The sin for violations committed by Islamic banks falls upon those in charge of them, not on the depositor, unless the customer is aware of the violation.