I've reported Multichoice for making a double deduction almost 2 weeks ago

I've reported Multichoice for making a double deduction almost 2 weeks ago.i was told that I canceled the account hence they did that which is not through. I'm worried about incorrect billing happening at Multichoice. I am seriously considering opting out of Multichoice as I can't afford double billing.ive heard enough with Multichoice incompetence