FNB freezes orphanage account for no reason

FNB froze our orphanage bank account on Wednesday 4/3/2015. Without a phone call beforehand. They said there is FICA documentation outstanding. They have now admitted that it was not outstanding and that the account should not have been frozen. I phoned them about 5 times in the last 2 days and they promised to escalate the matter and phone me back. They didn't phone me back. The account is still frozen. I need to buy food for the orphans and I need to pay the contractor who is building our new home. This needs to be dealt with URGENTLY. They say they understand my frustration and that it is uncomfortable for them to tell customers that they can't do anything for us. But I think it's more uncomfortable for me to tell my orphans that they won't have food today. And to tell the contractor that he can't pay his workers today. I am VERY disappointed with the bank. This is our money and they have no right to freeze it like this.