MONEY ****** OUT OF MY ACCOUNT FROM DSTV - MULTI-CHOICE - IT ISSUE THEY SAY!!

I am absolutely shocked with horror, after cancelling my subscription with DSTV (multi choice) end of last month (August) and confirming it twice with them over the phone they had the audacity to deducted another R899.00 from my account. I was told at the end of August when i cancelled that it would be automatically switched off and NO deductions further will come off my account. During the month of September i got a sms stating that an amount will be deducted again so i called in right away and confirmed my cancellation in August with them and was told AGAIN that i should not worry and that everything was in order, NO MORE MONEY WILL BE TAKEN OFF MY ACCOUNT ..... false and lies that's all they tell and the call center talk a lot of BULL .... I WANT MY MONEY BACK NOW!!!!!! THIS IS *****!!!!!. I called in today and was told that they will refund me as this is an IT error, what the hell do the call center agents do when one calls in and they confirm that it will be cancelled, this is theft in my opinion - ****************.