MTN contract changed to exorbitant month-to-month without my knowledge or agreement

I had 2 year contract with MTN for a 20GB data for R374 for a month. When the contract ended, I was automatically switched from contract to month-to-month without any communication. I only found out when I was about to renew and upgrade my contract to the October uncapped deal.

The month-to-month charge is R1 243.52, which is significantly higher than what we agreed upon.

Service Request Number: *** has been opened without my knowledge with a new debit order and I had reversed that debit order and paid the amount we had agreed on 2 years ago. November is now the 2nd month and they want to charge me an exorbitant amount while the data has been stopped until the October amount has been paid in full. This is gross injustice and I will not paying anything out of the contract signed or data provided for the month.

I will be taking this matter up with the ombudsman.

Regards

Mo