Telkom - not even if you were the only option available!!!!

I am so tired of the pathetic service rendered by Telkom. I cancelled my uncapped Wifi with Telkom on 12 September 2018. I eventually called them on 21 September 2018 to inquire about the status of my cancellation. On the same day via sms I received confirmation that case number ********** 3 was resolved. Just minutes ago they debited my banking account with an amount of R719, 75. Why I would like to know when I no longer receive service from them. I demand a refund of my money. You are without shame or ethics. The next person I will complain to is the Ombudsman as you not only refuse to respond to my complaints, but now you are robbing me of my own money. I have had enough!!!!