Angry customer

I had a cellphone contract with telkom since March 2022 and I was paying R501. Last year I lost my Sim card then I went to telkom to block the Sim card but continued with the payment. My contact ended March this year. Now I'm surprised to receive a bill of R159 for data. When I call to enquire I was told that they have upgraded my contract, without my consent. When I tell them that but my Sim card is blocked since last year then they told me that the Sim card is active. On my app it doesn't even show the numbers of that Sim since I blocked it. Now I'm surprised that the Sim card is active but to me it's lost,I dont even have that Sim card for a year now. Who's using that Sim card now and why must I pay for something that I'm not even using and why upgrade the contract? Who said I want to upgrade? My contract has ended last month and I don't want anything to do with telkom anymore. Please fix your mess and stop debiting into my account for something that has ended. My journey with you has ended. I've been waiting for the copy of my contract till today. Who gave you consent to upgrade????