Fnb Chatsworth a bank that doesn't keep their PROMISE

I went into the branch a few days back spent over two and half hours trying to resolve a query , the consultant phoned the call centre opened the query and I was promised feedback in 48 hours.i did get a call from someone in the branch who i explained the query then I get an email that my query is closed but the matter hasn't been resolved fully , no call from anyone one or any update, terrible service delivery Fnb , very DISAPPOINTING