Cancellations

I had a vodacom fixed LTE contract, it expired early im this year, vodacom then decides to put it on a month to month (which itself irritates me as the contract has expired it should be cancelled), I decided that I want to cancel the contract as I no longer require it. Instead of cancelling my contract, vodacom decided to Upgrade it. I have been on the phone with several different departments, cancellations, upgrades, aftersales, it has been almost 2 months and this massive company cannot just cancel an expired contract. The last words was that I have to wait for new year as my upgrade will be reverted and then I have to call AGAIN to cancel, and on top of that I still have to pay for the mistake that VODACOM made. This is honestly a useless company. Once my phone contract expires I will be switching networks, sad part is I have been with Vodacom for 15 years and never had issues.