Unsafe Money

I logged a complaint with the call centre about a debit that went off my account that I did not have the knowledge about. After tracking the account holder, the call centre agent gives me the details of the company and tells me i must find out why they are debiting me. I explained to her that how can they make it my problem if I do not have the knowledge of the debit order in the first place and I have never heard of the company that is debiting me. Surely this is a case of *****, all she could tell me that they can block the debit order for 3 months only and it will cost me R55 to block, for something that I have never agreed upon. and that is all they can do nothing further. As a client of Nedbank I put my trust in you to protect my account and my money, but if you say you cannot help me to take further steps, then I will be forced to move my accounts and my bond to another bank that I can trust that my money will be safe.