Repeated fruad on my account by Cell C

This is a follow up after I have already logged a complaint with Cell C. They confirmed my account is closed as it was supposed to from when I called to place Notice on the 12th of November, account was supposed to be closed in December. But they debited me in January after confirming to me over and over that I won't be debited (I kept on calling to confirm)

Update: So I waited before I could comment on whether I was satisfied by how Cell C dealt with my query or not. I last spoke with Theodora from Social media, who we concluded that Cell accepts that they were not meant to charge me (my contract was supposed to be cancelled as I instructed that I don't want it renewed), yet they debited me, I had subsequently reversed the unauthorised debit order, then she gave me a fee that I need to pay into the account of R165, for the remaining days of the Month of December after my last authorised debit order went off (before January ********** debit order). I then went ahead and paid even more, I paid R170. I got a confirmation sms from Cell acknowledging the payment and confirming that the account is closed. But now I see on the 20th of February Cell C debited my account again. Why Cell C? are you just abusing my account because you have it. What do I need to do to stop this ***** you are doing in my account? I am on prepaid line, yet you are debiting my account, why! Can someone call and rectify this ASAP.

Cell C is *****ing my money again!