Vodacom invoice dispute

What a service from the number one network. It’s clear they don’t care about us as customers. I will never ever recommend anyone to Vodacom the service is bad and no one can read nor understand the statement. I’ve been calling for two weeks to dispute my invoice and on one saw the need to log my dispute as they keep on saying the double billing is correct. This is how they rob our parents and customers who have little knowledge. Was told someone will get back to me until today am still waiting am very disappointed in Vodacom