Angry Customer

I had a contract with MTN which ended on the 12 of February 2026, I later received an email that I will be on the month to month and I call that same day and they said I need to call on the 20th of February 2026 and I did so and I was told that they have cancelled the month to month. But to my surprise today on the 13 of March 2026 I received another email of how much I will pay for my month to month and I called MTN immediately and they are telling me that they will only cancel next month which I have to pay again. And I told the lady that I called February and she said there is nothing she can do they still need their payment. And if I don't pay they will hand me over. How can you give someone something that they don't want and you end up threatening them. What MTN is doing to their customer is not fair because we have POPIA act in SA you need to have the customer's consent first, its either via OTP or a signature