On Air hounding non existent customers after their passing

I was contacted telephonically months ago by a very rude woman insisting my Husband who passed away in June was renting a decoder from them. I informed them that couldn’t be the case as we have two PVR decoders at home which are rented through Multichoice. She asked me very rudely to send through his ID and death certificate which I refused to do until I saw proof of a contract. Not happy with that, she also called my domestic worker at home & quizzed why if we said my Husband has passed away is his cellphone still on. How dare she. I have phoned them numerous times to explain the situation. Last time was yesterday when I had to tell them yet again that he had passed & was told it was a “telephonic” contract & no proof of him actually being responsible for this account available. She said she would make a note on the system not to call or message again. Lo & behold again today, a threatening sms saying legal action for an amount that constantly changes. Yesterday it was R297, today it’s R119. Go ahead & sue. You are a disgusting bunch. Completely *********** and disgustingly rude personnel.