Account Closed w/o my Authorization

I am rather shocked to find out this morning 23 Jan that Nedbank, after deducting bank fee's decided to close my business account without my consent or authorization. On the 21 Jan, a transfer was made to the account. When I had logged in to my internet banking profile to verify, the online portal stated that this account is restricted. Phoned customer support on 23 Jan, a consultant verified that the account is closed. I had informed him that I did not authorize this. He then transferred me to another consultant, which rather surprisingly stated that she could not see my account details on her system. Shortly thereafter I received an sms stating this account is now closed. The second consultant insisted that she could no longer assist me and that I must visit a branch. By Nedbank closing my business account for no apparent reason, it has impacted heavily on my business as I had to inform debtors not to proceed with payment. Furthermore the payment made to my account on 21 Jan cannot be seen and I have no idea what has happened to this transaction. Yet Nedbank deducted bank fee's then proceeded to close my account. I am left with no option but to report Nedbank to the SA Ombudsman.