Continuous ***** on FNB account

I have experience ***** three times this year and my money has only been replaced once. My recent experience being yesterday when R250 miraculously disappeared from my account. I can’t live like this. I was told to wait 7-30 days for the ***** investigation to be concluded and that is ridiculous! I’m so sick of this bank and its weak security measures. As soon as the ***** investigation is concluded I’m switching banks