Bad treatment from Nedbank from a widow trying to close her husband's accounts

I lost my husband suddenly 17 October 2022, I went to Nedbank to close his account. The first time was March 2022 there was two accounts on his profile. We contacted the legal department. They said 14 days. I went to Nedbank Bayside another branch because it was closer than the other nedbank branch. They knew nothing about it. So we started the whole legal process again. The legal department said they will contact me in a week. I told them I am relocating out of the province. Up until now 18July 2023 I still have not had a call from them. I went to my local branch, the one account that was in a positive amount had dissappear from his account and just the one account that was in a minus was left on his profile? They can't explain to me how that happened, and no one had contacted me since I reported the issue. What do you do?