Worst customer service - LTE Home internet

Where to begin. I have been a loyal Vodacom client for more than 20 years even through times where service was terrible, but my latest experience renders their customer service the worst I have ever encountered. Based on the terms and condition contained under this link https://www.vodacom.co.za/vodacom/terms/home-internet-lte where Vodacom has changed the T&C's from uncapped to capped for the home internet LTD Product and then also gave clients an opportunity to cancel free of charge by 31 April 2023 if they do not wish to proceed with the contract. This is exactly what I've been trying to do throughout April of which I thought my latest attempt on 28 April was successful, only to realise that it wasn't when I was billed for May 2023. When I tried to query this, the cancellations department conveniently has no record of me trying to cancel this contract in April 2023, even when I provided ticket numbers which seem to be of no relevance when trying to use it as evidence of my cancellation attempts. Now the cancellations team on *** refers me to the store because the contract was a store purchase only to waste my time at the store stating they cannot help me as I need to phone cancellations which is what I've trying to do with no results. So now I'm faced with a situation where cancellations CallCentre refers me to the store and the store refers me back to the call centre and there is no way you can speak to a manager or escalate to have the matter resolved. I have already wasted so many hours to and from the store, talking to agents at the call centre, every time having to repeat my story which just get longer with every attempt in trying to resolve. I'm amazed by the high level of customer service and efficiency when they try to sell you something but when it comes to issues that need be resolved, customer service is non-existent. Absolutely appalling