Lack of respect for the customer

Last week Wednesday evening I purchased CellC data for my cellphone through the FNB banking app and I still haven't received it. I called in to the relevant department last week Friday and was told that the situation will be escalated. I was told that somebody would call me back in a day. I called again on Monday and was told that someone would sort it out. I had to call again today and spoke to a guy by the name of Zunaid and was once again told that I would be contacted today. Once again nobody contacted me. It's been a week and I still haven't received my data. I used up over 40 mins of my mins and over R30 airtime calling after what should be my money. I haven't received any feedback. I keep asking to be contacted by a manager and nobody ever calls. I am considering changing banks due to the nature of how I am being treated by FNB staff