Easy for ********** to ***** money from my account

I have had endless problems with unauthorised debit orders or stop orders going off my account. It is absolutely devastating to see how easy it is for anyone to take money out of my account. I don't only have to pay the admin fee, but I have to interrupt my work by phoning in to reverse the payments every time. Only to find that the next month I have to do it again. I really don't feel safe with FNB at all! I am prepared to start paying all my monthly accounts manually to prevent this from happening but FNB call centre says there is no way I can protect my account this way. What am I supposed to do? FNB how are you going to protect your customers??????? I have heard that it is basically not your problem. It's between myself and whoever demanded the money! So how can you help me??????