WHAT CUSTOMER SERVICE :-(

I was contacted in 2022 to say that the package I was on was falling away and I was being moved to another package. This was the only change being made. The call center person said it would be cheaper as well. I have been trying to cancel my contract with MTN since January after an amount exceeding R300 was debited from my account. MTN customer service is terrible. I have also not upgraded my phone in 2 years. I was recently informed that I can only cancel my "contract" in 2 years. There was no mention of a contract when I was told I needed to change packages. I have signed no documents and I have disputed this with no luck. I can't even register on the MYMTN portal because my cellphone is not linked to any contract. I had feedback saying that my upgrade dispute is invalid. WHAT UPGRADE. I have not upgraded anything.