This was canceled but they are still debiting my account.

Hello Peter Please help as this has been going on for sometimes now, I've canceled this data situation and they have refunded me R 357 (15-11-2017) and they are still debiting my account each and every time. I've tried phoning them with no joy and I've also sent some email with this regards and they will tell me that they've canceled the account and month end comes they will debit my account again. This is irritating because each and every time I reverse the debit my bank charges me for that, so please help this is the bad reflection on my account and this is affecting my credit score. They normally debit R 119 and on the 28-11-2017 they've debited R 238 after that the went back to they normal debit that is R 119. Details from my bank as I'm not to sure if this is the account number hope this will help you to trace and see what is going. Account no ********** 6-1 Account holder ID no is ********** 124089. Best regards