Unable to access money in my business account

I have a business account, but I can make a payment or transfer money. I went to the FNB Branch bank with my co-signatory with all necessary documents they could not assist as we were advised to call business enterprise to set up online banking. I requested the branch to close this account and transfer the money to my other account, but they also could execute that function. I have been calling online business banking, but I have been unsuccessful as they kept on hold for more than 10 minutes each time I call. This frustrating as our money is stuck in this account, and we cannot access it. Please advise on how I can close this account ASP.