Vodacom wont cancel my line

I requested a cancelation a month before my contract ended back in August 2020 and was told that cancelation was logged and i will soon receive confirmation of cancellation once the cancellation is complete. my contract was not cancelled and i kept on calling to indicate that my contract is still not cancelled and everytime I call i am told to hold until the manager goes through all the previous recordings. The feedback I get everytime is that the recordings show that I indeed cancelled in August and that my contract will be cancelled and within 72 hours I will receive confirmation of cancellation and my account will be credited from August until the last time I paid. it is not end of January 2021 and my account is still ot closed. i stopped paying end of November and now my account is apparently in areas for December and a late payment fee has also been added. I have received a call from Vodacom accounts who are asking me when i will be making payment on my account. Apparently my line will be cut off if I do not make payment. I do not plan on making any payment whatsoever and if it means my vodacom line will be off then I am fine with that.