Telkom Has No Respect for Deceased Customers!

I have been trying to cancel an account that belonged to my late Mum since late in February. I have been to two different stores, I have contacted the team online, I have posted a request for assistance on Facebook and have emailed the suggested addresses. Every single attempt to cancel a simple mobile phone account for a DECEASED person has failed with responses from Telkom ranging from "I don't know how to cancel a deceased persons account" to "Just log in and do it online" Telkom has also told me that my late mother must give 1 months notice of her intention to cancel the account!??! I did receive a reply from Telkom on Messenger telling me the same story about a months notice but to this day, I am still unable to cancel this account which means Telkom continues to bill my late Mum for her service! Telkom your attitude and lack of assistance in this regard is nothing short of despicable. I would love to know how to cancel this account so that I can move on and never in my life deal with Telkom again!