Hackers stole everything and Nedbank do nothing

In March 2023, over 41k clients were affected by a malicious hack which resulted in massive monetary loss. My father was affected, where the hackers completely cleaned out his bank account. No one at Nedbank did anything, no account alerts went off and only an hr later did the ***** department "suspect *****". His "personal banker" does nothing, infact she blatantly ignores his numerous calls. The ***** department will not divulge details, and customer services are just as pointless. No one is willing to help or listen or stick to ******* promises of returning calls or investigating. The hackers without doubt had inside knowledge as no approve it messages were even sent to my father, yet his account was used to buy massive amounts of Bitcoin from a device that wasn't even trusted by the Money App .The is gross negligence that Nedbank do not want to admit to. As a result, my father has reached out to a lawyer to issue demand for Nedbank to comply and expose the details that will reveal that their security is severely flawed as they will lose not only huge amounts of money to payback the clients that were de*****ed, but they will lose the actual clients themselves .My father and I have only ever been with Nedbank and we both cannot wait to switch banks. My money is safer under my mattress than with people who couldn't care less, like Nedbank.