VERY DISAPPOINTED WITH FNB

I am very disappointed in how I have been treated. An unknown amount came off my account, I immediately phoned FNB. A form was sent through, which I completed and sent back. I was told it would take up to 7 working days. I phoned the 6 and the 7th day. Only to be told it will now take 10 working days. I phoned on the 10th day, I have been on the phone all day with FNB. You are put on hold for at least 10 min at a time. Still, my query has not been sorted out. I asked to speak to a manager. I was told my query had been escalated and the manager would call me in 2 hours. I had to phone back only to be told 24 hours now. Absolute shocking service.