Terrible incompetence with online business banking

I have had the worst experience as a business owner. We have had our business account for 10 years. Our online banking and app stopped working. I was in the branch, have ref number. Numerous emails and phonecalls to diffrent departments. In this age of technology I have to drive to an atm for all our business banking. No one has an I idea how to assist us or rectify it. Every time you speak to a new consultant. Explain the problem. Get promised that someone will call you or a teamleader will attend. It is now 12 days after the promised resolution date and still no one can resolve our issue