FNB *********** to deal with ***** case

I reported a ***** case on my FNB account on 9 January 2023. FNB has still not resolved the case. The ***** Investigator never responds to my emails and calls, and I rely on her colleague to get ahold of her. She continuously promises to resolve the case and "get back to you tomorrow" but never does. The ***** took place because FNB failed to deactivate my FNB APP on a ****** device. This is after I spent hours at the bank and on the phone getting help to deactivate all my online baking including the APP. Now they are failing to manage the ***** case. Incompetence after incompetency is my experience. I have already closed the personal account, I think it's time I take my business account somewhere else because their incompetence is costing me money and stress.