Awful Telkom service and unable to do simple cancelations

I phoned Telkom at the beginning of September 2024 to cancel my Data contract i had with them. The consultant said my last payment would have been at the end of October, which i found strange seeing as i am phoning at the start of September, but i accepted it. In November there was a deduction and i assumed that Telkom wrongfully billed me so i reversed the payments going forward seeing as i already requested a cancellation. Now i am receiving messages stating that i owe Telkom money and that they will blacklist me if i do not pay the money.

I phoned Telkom earlier this week and they stated that n cancellation was never put through on the system. meaning that the Telkom consultant did not do their job as requested. I have asked them to assist with this but keep on being put through to different departments stating that the new department would be able to assist me but they don't. I have even emailed the the last few weeks with no reply. and the Debt collectors that Telkom gave me up to are Just as useless stating that i have to just pay the money and move on. I do not have the money they want and can't just give out money freely