INSISTING TO OFFER A CONTRACT TO A DEAD PERSON

I have been contacted on a number of occasions by Cell C, despite the fact that my number is registered with the Direct Marketing Association to not receive marketing calls, trying to offer a cell phone contract to my domestic worker. At first I explained that she was critically ill in the ICU of a hospital, then I explained that she passed away, I explained again that she passed away and this morning had to change the words to she DIED and cannot be contacted. All the time it sounds like the same person calling.<br> How insensitive and persistent can one be? What do you need to be convinced that she is no longer able to make or receive calls due to no Cell C network in heaven? Can I take you to the grave?