Poor Service

I've been trying in vain to get assistance with changing my email details since last week. I have a premier account yet I'm receiving worthless service! No replies to my online queries via website or Facebook page, and my so called team of bankers keeps giving me the same copy paste response, I've explained twice now that the change details button does not display anywhere on my internet browsers so I need FNB to change it for me! However, every time I tell them that, they go inactive on the app before telling me there was no reply from me and close the query.