Vodacom complete incompetence

I wish there was a 0 star option. Vodacom, have been beyond incapable!! My parents have both each had a Vodacom contract for over 30 years - both in my fathers name. He died 2 months ago unexpectedly and NOBODY has been able to process a change of account to keep my 75year old mothers phone account active. I have been into 3 different stores 9 times now, countless calls the 'customer care' and have at least 7 emails sent with all required documentation ( death certificate, ID's, bank account statements, proof of address etc etc ).... and STILL every time I follow up I have to start from square 1. It is as if this is the first time this has every happened or been requested.