Renewed contract without my permission

I had a contract with vodacom, data sim, (2 years) d**** went south during the covid and couldn't afford to pay. I was owing R789.00 and later in the year called vodacom to ask to close the account, the lady who was on the other side of the phone Confirmed the bill. By the, I was unable to use my number because it was blocked, I the three away the sim. Now vodacom is billing me monthly for the service I didnt agree to( renewed contracts) and they are sending data to the blocked number I'm not using. I do not owe vodacom anything above R789 and I haven't agree to renew0my contract with them. I'd like the call recording to be pulled to solve this issues because I have been sent from pilar to Limpopo whenever I need answers with my account