Cell C sms dead person

My mom (80 years old) pays her cell phone bill promptly every month. She has now received a sms saying that her account is unpaid and will be blocked. In trying to resolve the issues she visited two shops...none of them had a clue as to assist.

Calling the call center...no answer.

To make thinkgs worse, she has now received a sms informing my dad to please pay the bill. My dad passed away in May 2015. I personally arranged for the account to be changed to my mom's name.

Really, how do you think a 80 years old lady feels struggling to sort out her account and then receiving a sms as if her husband did not pass away. It is terrible! Shame on you.