Deceased Account Cancellation

I tried cancelling of Contracts for a person that's deceased. I emailed the necessary documents numerous times. I went in to the Vodacom Shop. I called the Vodacom Customer Care lines, the Legal Department and the Cancellations Department, and NONE of Vodacom's employees could assist me. One operator says I need to complete a form for cancelling the numbers/contracts. When I call to do so, no one knows and transfers my call to the next department. So no one at Vodacom knows how this process works? It's Ridiculous! Jolene