Account query not resolved

I have discovered an unauthorised debit order on my account for the amount of R49. I then phoned the premier banking call centre on 27 Jan15. The consultant that assisted me said it takes 48 h. I then phoned on 30 Jan15, because I had no response. I was then told that someone will phone me after 12. At 2 o'clock I decided to phone again. Spoke to a consultant again who said I will be phoned in 10 min. On Monday I still have not heard anything as yet. I phoned again spoke to a so called manager, Wayne. He also said the consultant will phone me back in 10 min. On Tuesday I have still not heard anything. Spoke to another consultant, who promised they will get back to me with regards to the debit order. I received an sms to say the debit order is for Core banking solutions and I was given a tel no to contact. How ironic the phone rings and rings. So I called again to the premier banking call centre, the consultant that answered was very helpful, and called a department that deals with the debit orders. She was then told to phone the no that I was given. She could not get hold of anyone, the phone rings and rings. She then sent an email to someone that will phone me back.