No action on Deceased Account

I have been attempting to make contact with CellC regarding my mothers account who passed away in March. I have sent emails to your legal department as well as your debt collection department. No acknowledgement has been received that your organisation has taken note of her death. Each and every month this is the same story. Every month I send her death certificate to you and nothing is done. This service is disgusting towards a grieving son. Please contact me on the cellphone number provided in the hello peter complaint to resolve this as soon as possible.