Contact the CEO of the consultancy. Assume he/she doesnt know and would like to know. Do it in writing. Then write registered letters to all directors of bank i

Contact the CEO of the consultancy. Assume he/she doesnt know and would like to know. Do it in writing. Then write registered letters to all directors of bank if no satisfactory answer and remove yourself from project, and send threats of legal action if not paid in required time. If you are upfront with the bank, it is unlikely they will take legal action against you. In the event they do, you will be protected by your limited liability company (assuming you are operating through one).