Vodacom South Africa *********** to reverse an upgrade

I don't even want to give Vodacom's Customer Services a star - it would be better if they could get NO STAR!!! My contract was due for an upgrade last month and I was approached by their online upgrade consultants. The contract is still in my mother's name, since it was originally taken out when I was still a student. An upgrade was effected on 12 April 2018 and the following day (13 April 2018) we submitted a request to cancel the upgrade. Needless to say, it is now almost 4 weeks later and the upgrade request was still not effected. It was logged on their system though. I travelled almost 700 kilometres to our nearest Vodashop (in Kuruman - twice; 126 kilometres one way, and Kathu; 80 kilometres one way). When calling their call-centre, their consultants just shrug their shoulders. I just said to one of them that I am NEVER again going to take out a contract at Vodacom South Africa. Surely they don't need my money nor do they need me to be one of their customers. I am shopping around for another service provider as soon as someone competent resolves this mess...