Vodacom the worst and most sly company

The worst!!! I have been with Vodacom almost 10years.. My last contract ended in August 2022, After numerous calls I keep on trying to cancel the contract as I am billed for a line I don't even have the sim card anymore... Every month I make a call to tell them I DON'T WANT THE LINE ANYMORE CANCEL THE SUBSCRIPTION then I get told that now it will take 30 days to cancel so the end of the following month there will be no deduction then at the end of the second month. BOOM another deduction. Going into a Vodacom store is just as useless because we live in a time where a manager can't sort out any of your complaints and you are stuck with a call center full of *********** staff. At least I've got the recordings from all the calls make, think it's time to get a lawyer involved. I am pretty confident that I've got a strong case.. I refuse to take another "30 day cancellation process" at my cost. Vodacom offers nothing but the poorest service.