Pathetic service

I have a 92 year old mother who no longer has a cellphone. She had 3 Vodacom contracts. We asked Vodacom to cancel all the contracts. With huge difficulty they eventually cancelled 2 contracts. For months now we have been struggling to cancel the 3rd contract. There is no Vodacom outlet where she lives. If you try and get ho;d of a consultant, you get through to TOBI. She does not have cell number to go with the contract, so TOBI can't help. How do you speak to a PERSON????? WatsApps, sms, and emails go to TOBI!! Useles