Cancellation of the contract

I have been trying to cancel the contract for the past 3years and recently have cancelled them on November 2019 with the ref no ***2 done on the 15/11/2019 and second one ref no ***7 spoke to the agent named Patricia and was told I ddnt cancel the contract,telkom still Bill's me and I dont understand why because the contract has been cancelled more than twice from my telkom portal www.telkom.co.za .This is not how customers should be treated honestly