Day light robbbery R5400.00 Telkom data

I am an angry day light ****** customer of Telkom mobile, I have been trying to cancell my suspended services from last year 2017 November. I have pain a total R5 400,00 from last year April unti to date for a for a suspended service. Last year they were using a cancellation form to fill and email I did so and they didnt cancell, now they are using an online https://apps.telkom.co.za/fulfilment/protected/cancelProduct still my contract is suspended and I cant click cancell, always when i call from July this year they tell me my service is unsuspended I should cancell online, They are useless, I emailed this employees and they do nothing they dont even escalate.. ********** ********** I have had this contract for over 4 years thats how they repay me.