Telkom is disappointing

I had a contract with Telkom which ended 2024 May or June, apparently around November they started debit R400 which I’m not sure why? When I called them, they said I took a contract with them again a phone which is not true. I sent all documents to dispute the contract last year December till date no feedback on their side a consultant by the name of Princess Dladla who said she will assist me with this matter is forever unavailable to the office that’s the only response received from her. I believe they used my profile to open a contract which is *****. What’s surprise me is that they wanna blacklist me with something I don’t know about. I’m so disappointed with Telkom