How do a Vodacom customer get issues resolved

Took out a cellphone contract for my daughter at university. She is receiving notices from Vodacom. As I am unable to confirm that it is Vodacom sending notices, because I am unable to phone from my daughters’ device/number. As the TOBI BOD are not able to to assist if the cell number you phone from do not match the queried number. It also seem Vodacom has no people left that can answer a phone or answer an email. [Everything is AI driven]. As a loyal customer of +25 years a am deeply frustrated. WOW what a way to chase your customers away, just refuse to talk to them.