Billing/ account and bad service

I was debited 3 times by Nedbank because I apparently owe them for the month of July, when i called them on the 1st of December i was promised by Thabile that the money they took they will refund me on Thursday. Thursday came and gone and i called again but then they started giving me the run around so I took to twitter on Friday, they rep**** asking me to send them a detailed mail of the incident, I was told that they would contact me to make payment arrangements. Nobody from the collections dept or escalation dept contacted me. I had to follow up AGAIN with my own money. I have been disrespected in the sense that Nedbank has seen fit for them to just take my money without my consent or approval and now it seems so difficult for them to pay me back when it was so easy for them to take the money. I need my money back and waiting for another \7 working days"is not going to cut it for me. If you want me to use another bank please just say so. Just because I am young it doesn't mean that is a free ticket for you to ill-treat me. """