Account blocked

We opened a new business with FNB after many years with standardbank. Every document has been sent to Fnb many times for the opening of our account. They verified us over te phone as well. I tried to pay over salaries this afternoon, via internet banking and my business account has disappeared from my profile. I can't get hold of anyone to assist. Tonight my daughter tried to pay for dinner with the business card and it said not exepted. We have all our money for salaries and month end in the account and have no access to it. I can't believe this. No call or sms from Fnb to say why!!! We need this up and running immediately. We are unable to go into the bank as we are overseas until the 5 th of May. Fnb. You need to assist urgently