Deceased bank account

My husband passed away in February this year and I reported this to FNB. It is now a deceased bank account. I cannot understand why FNB is still charging bank charges. I have tried to get hold of someone in the deceased department, but no response. I send emails but no response😱. Spoke to my consultant but she cannot assist because he no longer is a customer😱, then why the bank charges? FNB please get your act together.