Online Banking not working for 4weeks, no solution

It's been 4 weeks since my Business' Online Banking just disappeared. I have sat at a few FNB branches for over 12 hours in total now and been on the phone for more than at least 10 hours trying to correct this error. No one seems to be able to help or find the error, and always makes be believe they will correct this and contact me back to give me a status update. Yesterday after being at the Gardens FNB bank for 4 hours and speaking to the Manager I left without it being fixed, but being promised they will call me every now and then with a status update. A day later I tried calling then but I instead got to a very annoying and sarcastic consultant telling me he cannot put me through to the Gardens branch and he will send an email, they should get back to me after 24 hours. I have gone from being a loyal FNB user to hating them. I have never exoperienced this bad service from any bank. You are *********** and I will surely be closing all the business and personal accounts I have with you if I don't have this problem solved immediately. Can you believe it, I'm trying to run a business for almost 4 weeks now without having online banking, FNB believe we're back in the 80/90's again!