Product/customer dissatisfaction

I am loyal fnb account holder but in the passed couple months i havent been happy. What makes things worse my complaints are pushed aside as if they are nothing. Firstly i use they simcard and realized lately that theres some irregularities with my data usage rate, complained and it took a month to respond with an email with a data usage log which couldn't explain why was my data depleted so quickly. Secondly i ordered a phone the sales agent and confirmed over the phone even with premium aswell, to my disappointment i received two simcards i didnt order and premiums i didnt agree to, further more they debit from savings account which I myself cannot access money from a delivery fee. I was told it would take 21 days to reverse the debit but nothing could be done about order, its a month waiting not even a call. I am really loyal to my FNB but they have really done me wrong and im not happy. Wrote a review two months ago, got a ref no: but still nothing...