DSTV Subscription cancellation - Debit orders are still put through - Insurance penalties

I have called the Multichoice customer service and requested to cancel my subscription. This I did around the 20th of June to ensure on time cancellation and that I bank account does not get debited at month end. At the end of June, they debited my account, I reversed the transaction, end of July again I have been debited with R169 as a penalty for not paying my account. The DSTV INSURANCE is also sending endless text messages account the outstanding account. When I call to enquire they say they can see that I called and asked to cancel but they are not reversing the penalty. What more clarity is there? The say, my one cancelation is not enough I also need to call them and cancel. My issue is I had one package and one debit order why must I now call so many divisions?