Charged for cancelled services

Once again Vodacom have managed to make a mess. My brother upgraded his contract on the 31st of March 2020 removing some of the services from his contract. Despite having record of the request he was allocated with said removed service and billed. When he called this morning to query this, one of the *********** consultants told him that he had done a request from his phone two days after he cancelled it. That is absolute nonsense! Vodacom insists that he did! I myself have already had a run in with your consultants at your Chatsworth branch and had Vodacom reimburse me for R1500 for incorrect information about a contract. It seems to be a reputation with Vodacom. Bill people for services they do not require. Keep an eye out guys...read your bills.