VODACOM UPGRADES CONTRACTS WITHOUT CONSENT

So 4 of my contract expired in December 2022. However, Vodacom decides to upgrade all 4 contracts on their own without my consent. When I called the cancellation department, the lady said all 4 numbers had been migrated to a higher plan, but I need to speak to aftersales,

As usual, when I called aftersales, they say I need to speak to cancellation as they cannot do anything from their side.

Since this month they have now added an additional R172.99 for 3 gigs, to all my contracts.

Now I must waste more time on call with their consultants.