Disgusting service

Absolutely disgusting service received from Vodacom. It is one month that I am trying to sort out an issue regarding an upgrade on my contract and to this day, no one has assisted me in resolving. I have called multiple times, lodged a complaint on Hello Peter and an agent will call, listen to the issue and promise to call back but not a single person has called back. I have asked to speak to a manager on numerous occasions, no manager has had the decency to call. I have been a customer for over 25 years and am disappointed and disgusted with the service. Vodacom does not realize that they have a business because of us customers. Disgusting service provider and disgusting agents.