Vodacom Vodamail debacle and theft

On 28/01/2022 I received an SMS that my current free vodamail account will automatically be migrated to a premium service and cost R29 p.m. from 31/03/2022 unless I decline. I promptly rep**** "2" to decline. I also logged into vodamail webmail a month later and deleted the account, after which I could no longer log-in:"user does not exist." Great, I thought. On 26/05/2022 I received an SMS that R29 would be deducted from my airtime for my vodamail account, and it was promptly automatically deducted without my consent on 27/05/2022. I followed the same procedure for my mother's vodamail account, and I suspect R29 was also deducted from her airtime. I have tried to contact Vodacom on their call centre, but Tobi (their "bot") makes it impossible for me to speak to an actual person. I have also tried cancelling it online, but there is no such option on my Vodacom portal, nor can I access vodamail to "re"-cancel my subscription, as the link to vodamail on Vodacom's website times out every single time / it's a broken link. If this does not get sorted, my next step will be to port my number to another network - after being a Vodacom customer for almost 20 years.