Appalling service - FNB revolving loans

Ive been a loyal FNB private banking customer for over 20 years and recently i have experienced the most appalling service with regards to my two revolving loan accounts.On the one account im only being charged interest so my loan amount is not decreasing and the other revolving facility has been suspended for reasons im not sure why.Every time i ask an update im told to wait 3-5 working days.My first complaint was lodged on 4 January,its almost two months later my two revolving accounts are still in disarry.My private banker Mr Tebogo Malumane has been of no assistance whatsover.I honestly dont see the value of paying a service fee for a PVT banker when you have to do everything yourself.Its easy FNB...!Please sort out your nonsense as i have never missed a debit order in my life so i dont understand why my one revolving facility is suspended.And sort out the other account as you stopped deducting the full amount so you can only benefit from charging me interest.Shocking service.Cancel my private banking account cause its useless as i have to manage my accounts myself