BAD experience with Telkom, refund me back

Good day, I have had a very bad experience with Telkom. I have a few contracts with Telkom, a data contract, and then 2 cellphones. Last year in October 2021 I was in Durban for work, and then one morning to my surprise nobody could get hold of me, and also I could not phone out. Such an issue as I need to inform all my clients that I am okay it is just TELKOM. Long story short as soon as I come back to Pretoria I went to a Telkom branch to find out what is wrong, to my surprise the lady at the branch could not find my contract on their system and informed me that the contract has been canceled, wow without my knowledge. I made a new contract with Telkom as I need to have a contract phone. All did go well, so from October 2021 that was the LAST time Telkom deduct for my no *** as the contract has been canceled. From November 2021 - until May 2022 Telkom did not deduct any money for this contract. What a surprise I got when I see in June that this contract appears again on my invoice. I did log a query with a case number on 13 June 2022 with a case number ***5. I received feedback that I am liable for this account as I have canceled the contract. NO, I DID NOT CANCEL. After numerous phone calls, nobody at Telkom could sort this out. The one lady said that my account was on somebody else account, why nobody can tell me. Again today I tried to phone Telkom to tell my entire story and again they log a query ***2. Telkom needs to sort out this mess, they cancel my contract / made a mistake, and I can not be held responsible for their mistakes. They deduct now for 3 months for a contract I DO NOT HAVE / USE