FNB allows deductions from my account without my approval.

I spoke to Ellen at FNB this time. She took more than half an hour to tell me she can't help me and that only person that can help me is Zulukazi to which she has escalated the issue. Once again FNB fails to provide me with proof that I authorised deductions from my account. As a result I hold them responsible for allowing a vendor to deduct money from my account without my authorisation. Having an FNB credit card is not secure. Don't bank with this bank. Passwords and OTPs and logining into their banking App means nothing as vendors are able to make deductions without any approval. No banker on the banking App is able to assist me. I am not sure what the point is of having this facility, they may as well replace these bankers with a bot.