MTN IS REFUSING TO CANCEL MY DATA CONTRACT

I had a data contract with MTN called My MTNchoice for 30GB for R299/pm. The contract end date was 28/02/2023 (after 2 years) From the 01/03/2021. I did send an email requesting to cancel my contract three months before the contract ended and never got a response.

Immediately after the contract came to an end, my account was billed R1445/pm and I was told that the contract has now been changed to a month to month and to a pay as you use without my consent. The account was billed for several months even though the SIM card has been blocked and I was not using their services.

I have since also received threats from MTN that they are going to take legal action against me for not paying for a service that literally costs five times what was agreed to and that is blocked.