Charges!!!!!!!!!

I am frustrated with this service. I had a Showmax account and cancelled my subscription , however they have still been trying to deduct from my account and has now to date left me in a minus of R235. I need this too stop, there is a reason why i cancelled it, but seems as though i will now be paying more for doing this cancelations. I was going to re-activate the service, but i have now decided not too, Please close and cancel my account. The email address used for this is ***