Unauthorised debit order inqury

I am very disappointed in the manner in which my query was handle by Mr K Keetiz from the customer service department yesterday, I called in disputing unauthorised debit order from my account , Mr Keetiz had no clue of what was the debit order all about he then said he will speak to his team leader for clarity, I was put on hold for more than ten minutes only to be told that the will investigate and come back to me the same day. no one had called me since this moment. it is very frustrating when you get such bad service from the bank that you have been using for years. it seems like no one cares. I am very frustrated I don't understand why the team leader failed to assist me . can someone please call me. ***