Incorrectly charged for cancellation!!!!!

I have been charged with a Clawback invoice in March this year, even though I never cancelled. I have been trying for FOUR months now to get them to remove this clawback invoice from my account. An invoice I was incorrectly charged for! And I've still been charged every month for my subscription. How the hell do you get that right SUPERSONIC?????? When will you correct this mistake of yours???? I am beyond fed up with you. I want this corrected NOW.