Vodacom contract together with VVM debt collections

Vodacom has is the worst place you could ever take a contract with. I took a 2 year contract with vodacom in 2018 over the phone. My contract ender with them in August 16 2020. I was required to phone in a month prior if I no longer wanted to carry on with the contract I did that in July 16 2020 to cancel the contract at the end of its term and spoke to Louis who said he would escalate the call mind you before that he tried to convince me to upgrade of whic I refuse. I got billed for September when my contract was supposed to have ended in August of which I paid the August fee. I phoned in again 18 September 2020 spoke to Precious and informed her that I had canceled the contract to which she said she sees the call I made to Louis and again she would escalate the call***) was the contractnumber and the number I requested to initially keep on a pay as you go. Again I got billed in October to which I sent vodam customer service an email informing them that I will reverse the October bill to which I did. Vodacom kept sending me statements that I owed them to which I responded that I did not. They sent my account with the ref I***to VVM. I have been getting calls from them as well as sms I told them I dispute the account. I spoke to Nompumelelo on the 16 August from VVM debt collections who called me regarding the account I explained to her everything. She suggested I send an email to *** with the attachments of the e-mails I had sent to vodam I did that and received a ticket # 79442. Yesterday I sent whatsApp to VVM enquiring about the ticket number and how far my despite was no responses. I phoned *** at 11:49 08 September 2021 requesting a call back to enquire no call back. 30 minutes after that I phoned and was on hold for at least 10 minutes with no consultant to help me. On the 27 May 2021 I had sent VVM a whatsApp they never responded. I am fed up and frustrated by the matter and I just want it resolved as I did everything that was required of me by vodacom on time in order to cancel the contract but still they feel I owe them R780.96 for what??? As these charges were after my contract ended before then I paid every month up until the 15th August 2020. If anyone is owed anything it's me for the debit order of the 15 September 2020