Shocking customer service while trying to manage account from overseas

I've been with FNB for over 10 years and since moving overseas (London), I've been dismayed with the poor customer service I've received. I've tried downgrading and closing my account multiple times with no success. They've been charging me a R199pm fee on what they have classified as a dormant account so who knows what I've been paying for! My funds are now depleted (over R1500 down the drain) and I am determined to close the account once and for all. I've been emailing mybranch, I've called the helpline (spent 45 mins on the phone yesterday being bounced around between numerous teams). I would strongly advise anyone in SA with an FNB account to reconsider their choice, if they decide to spend more time overseas. It is near impossible to manage your account from afar.