Shocking business banking experience

I would rate this experience zero stars if I could. We opened a business account with the online banking portal. I checked the guide before doing so, which said we would receive an email from FNB after we had completed the online process. Once the account was opened, we did not receive any email from FNB. We uploaded all FICA documents and we under the impression that the account had been opened successfully. We have now received funds into the account and are unable to make any payments! When calling online banking ***), they will not assist even though I am set up as an online banking administrator and my husband has verified the interaction through the banking app. I then called the business banking call centre on ***. The first call asked me to rate the service I had received after never being put through to an agent???! I phoned back and the call was picked up and I could hear the agent as she was reading aloud, but she never acknowledged me and after 7 minutes she terminated the call!! I then emailed *** to find out what the problem is (I got this email from the website) only to be told that the email address does not exist!!!!