MTN wants to R O B me

I had a data contract with MTN which I was paying about R300pm back in 2022. Around June 2022 I received an sms notifying me that my contract is coming to an end and if I wish to continue with the benefits the new premium would be about R1300pm. Look, my head is functioning lekker, so I called their customer service to cancel. I was told to call around November, because the contract was only ending December 2022 to effect the 30 days notice. 1st of November 2022 I contacted MTN to cancel the contract and I was again told to call some time mid Nov, the contract is ending mid Dec. Okay shap, come mid Nov I sent an email this time to cancel the contract and effect the 30days notice. My email was forwarded to the relevant department and the days went by. Some time mid Dec I get a notification stating my benefits are loaded to which I immediately contacted MTN. To my understanding the contract was canceled, only to find out it wasn’t. So now I fight them to cancel it immediately and reverse their benefits, to which the lady told me about immediate cancellation penalties. I tried to explain to her that I did my part and it’s them who didn’t do their work and so the matter would be investigated. At this stage the want to take my money while they do their investigation. I insisted that I will only pay them if in their investigation they find that I didn’t follow procedures. Come month end Dec they debit R1300 and I reverse it from my bank. It carried on for another 2 months I think, until they sent me an email that the investigation is concluded and MTN would credit my account with that money they claimed I owe them. A few months later I check my credit score only to find MTN reporting that I defaulted my account. This too I tried to follow up with no luck instead their cim legal email is useless as they always reply with automated replies even after I have asked them to contact me on my cell number. I have forwarded them my previous emails and referred them to the outcome of the investigation, but still. They emailed me some time last week asking whether I’ve settled the account. I am stuck with MTN and I have done my part trying to get the contract canceled on time. They did not do their part and they themselves figured that out with their investigation. MTN please contact me on my cell number so that we can resolve this, it’s been over a year now.