Vodacom's shady contracts practices

Vodacom's shady contracts: On 22 July 2025, Vodacom upgraded my account to 20Gb anytime + 20Gb night data @ R179 for two numbers. Today I got a call that has jumped to about R580 for both numbers. I am looking at the statement dated 03/10/2025, and on there it says the total is R372.03. When I request a cancellation, they say there is a penalty fee. Vodacom shouldn't trick customers they want to staying on the guise of being a valued customer, then decide to change how much you pay for your contract. It hasn't even been three months since I agreed to this contract now this. She was telling me that they will send me a router, which I don't need. Then tell you can't cancel. Utterly shady dealings. This is what I expect from deals done in dark alleyways, not Vodacom. These are mafia practices. If this is what you do, then release me from your contract. Fancy that it's not even three months. ***