Three months and no luck

I have been a FNB advocate for years, until now. I have been trying to open a business account since 22 June. The account was, at one point, activated and money was deposited into it. Thereafter they decided to freeze the account as they 'did not have all the documents they needed'. I have since sent them everything again, acknowledgement thereof was received 20 days ago but yet my account is still frozen, I cannot touch the money in the account and at least 15 invoices that clients have tried to pay, have been rejected from the account. It happens to be month end and time to invoice again, and yet still the account doesnt work. Everybody promises me that tomorrow it will work and it never does. It is also not an option to speak to a manager. I want to close the account. I am beyond amazed at this situation. Not even my personal banker seems to be able to assist me. How is this okay?