Is it permissible to eat from a breakfast provided by a usurious bank for the purpose of advertising itself and its loans?

If the purpose of preparing food and inviting people to a feast is to promote and advertise the bank and its usurious loans and forbidden dealings, then it is impermissible to attend or eat from this food. This is because doing so implies an acknowledgment and acceptance of wrongdoing, and assistance in it. Allah Almighty said: "And do not cooperate in sin and aggression."