Complaint Against FNB Private Clients

I am not one to complain about lack of assistance from a private banker. It is close to a month without receiving feedback / assistance from my banker downgrade my accounts from pc to premier. I have written to the banker, private client suite and even called the suite only to be told that they would get my banker to contact me. No one is acknowledging the receipt or getting back to me. This is the last escalation before approaching the National Consumer Commission as I am being treated unfairly.