Telkom not canceling contracts when requested!

I canceled my Contract with Telkom in July 2019 yet I am still receiving invoices. My contract was renewed without my consent in May 2019 and they did not even re-do the credit check or confirmation of employment. If they had they would have discovered that I am un-employed, therefore giving me a contract knowing I am unable to pay for it...this goes against the credit act. But besides that, I canceled the service in May & only received 2 of the 4 service cancellation reference numbers. When I called to confirm they said there were still 2 services not canceled. So I resubmitted in July for the other 2 therefore canceling ALL 4 services provided. I called to confirm cancellation and was advised the requests have been received but I had an outstanding balance which I then proceeded to pay. I called again to confirm and was advised they received payment and have canceled the services. I then proceeded to get invoices. In August I called again, The lady I spoke to managed to pick up the cancellation on the system and advised me she would liaise with accounts to sort this out. More invoices followed and Whenever I follow up some agents manage to pick up the information, others say the cancellation never happened. Can someone who actually knows what they are doing please sort this out once and for all? as I am still receiving invoices 6 Months later totaling a bill of R3379.86 which I REFUSE to pay.