FNB can't be trusted with clients money

FNB was a very good bank when I opened my account there. With time the service deteriorated to such a point that I don’t use the useless Brackenfell branch anymore. With internet bank service most transactions can be done so I managed. I went on holiday overseas when I noticed a transaction that I did not do or authorized and reported it by email to the customer service at FNB. The first time there was no answer except for a ref. It means FNB received my email. I send my complaint again after 2 weeks and a person who was willing to do a little work send me a form to complete and an email address. I send the completed form to disputes department with a screen shot of the transaction and receive a ref. Nothing happened for several weeks. I send it again and complain about the delay in answering that should be 5 working days (REF: ********** 2_ ********** 28) . I know that FNB will never answer because it is too much trouble to investigate and found what went wrong. It is an ******* transaction. Anyone who is on holiday overseas can found a huge amount of money removed from their account and the unwilling bank will do nothing and so ruin a holiday. A customer can never trust FNB with their money because it can disappear all anytime and the bank will do nothing to help. I’m going to the ombudsman to get my money back and then leave FNB.