Pathetic service

I am an FNB business client. I had a misunderstanding with a client which was resolved. The client has since apologised for his actions and misunderstanding. I have sent all documents and communication to FNB regarding this issue but my account still remain blocked for suspected *****.

I cannot conduct new business or cannot pay or buy any items as my account remains blocked. How do I run my business? Its beens 6 days now and the response from FNB ***** department is bad. I have sent numerous emails. And only got 1 reply. My feeling is to move move to another bank since FNB cannot prioritise their Business clients and urgency of they clients needs.

Please assist me.