Contract cancellation not processed

I have been trying to cancel my data contract since March 2023. I "finally" got assisted (so I thought) in August and they advised me that September would be my last debit order. I have just received a new statement advising that my next debit would be in October. Calling in to their Customer Care line is pathetic - seems visiting a Cell C branch or sending an email doesn't work as the "only" way to cancel is to call 084 135, yet even there they don't listen to what is needing to happen. I have requested an email from Nomphumelelo confirming that my contract HAS been cancelled and the last debit order (for what!!!???) will be in October 2023. No email received so yet again I am needing to call in to request. Don't ask me to rate a service when you haven't provided me with one!