NEDBANK refuses to help locate missing funds

My elderly father has been battling for years now to get help and resolve for a vast sum from money that went missing from various accounts at the time of his wife’s death. He has been passed in from branch to branch including head office & deceased estate - 100’s of emails, phone calls and also being ignored by the ***** division!!! Can senior management please get in contact ti find money that was ****** and placed into a supposed suspense account that NEDBANK can’t trace as well as give information on a large withdrawal from a card that was not authorised. My mother was a loyal nedbank home loans specialists employee of Nedbank for 12 years and it is sad to see how this entire issue has been evaded by NEDBANK.