FNB not assisting me despite calls to call centre and Visits to branch

I have been trying to close all my FNB accounts for some time now and I am not able to get this right. My accounts are paid in full and have no outstanding balances.

Please sort this out for me or I will be forced to take things further.

I have also been made aware while visiting a branch earlier today that there has been a business account loaded under my banking profile, This is not my account as I never opened a business account.

Please note that I am using this form of communication and a formality so when this matter is not addressed I am able to take this to the Banking industry ombudsman.