Cancellation of Vodacom contract

I cancelled my month to month LTE router with them 2 months ago and only to find out this has never been cancelled. I have phoned them on the 08th of Jan 2024 to ask them why am I still receiving invoices to pay. I havent been using the internet as they can obviously can see on their system. So this lady advised that I should pay the 2 months of service and that was my freaking last money. Now when I phoned in this morning to cancel they are having system problems unbelievable and was told that I will be billed again after cancellation. These service providers are complete *******s when it comes to cancellation. They want the last freaking cent out of you. Its sad because life is already a struggle and then they want to take your last money. I have been a loyal customer for two years doesnt that count for you. I will never ever support Vodacom.