Stop calling for a dead person that cannot help you.

My husband passed away 2021. I have send to all the needed companies and medical aid his death certificate. Still he is handed over overdue accounts. I have told this particular people how many times he is dead. You cannot speak to him. Go back to the supplier, which is Discovery and clear it with them. They have all the documents. They still insist every time to talk to him. Can they please wake up and make a note that he is dead. Really at this point I am very rude to them.