Telkom Failure

My 24 months contract with Telkom expired in May 2018, I went to their store in Eastgate to cancel the contract and they told me that they no longer cancel contracts in store so I must cancel online and I went online to cancel but their system doesn't complete the process for cancellation it says consultant will call you to confirm the cancellation then in August I went back again and they told me the same story I tried it again then it gave me my contract number as reference number and went again in December to Eastgate and the consultant referred me to the manager who told me that she is busy and will attend to me when she is finished with what she is doing which took longer than I anticipated and decided to leave since no one is prepared to help me then decided to call the help line with a hope of finding someone who can help and the machine referred me to the same procedure for online cancellation and end the call immediately. It is now 7 months that Telkom has been refusing to cancel the contract and deducting my account without permission.