Cancellation of Contract

I am so ****ed off with Vodacom, so much for being brand loyal, I have been with them since the biggining of time, never used any other service provider, but of late they are annoying me period, they continue to bill me for a contract that ended and cancelled in Feb 2021, you call them every time, you get a different call center agent, then they will tell you that they are escallating your issue, it it escallation after escallation without resolution, I am gatvol with them now, period.

I am thinking of cancelling all the contracts that I have with them once and for all, their service is poor and they shouldn't even try to blame COVID's working home conditions, they need to shape up.