Debited on cancelled contract>>>BEWARE!!!!!

I have cancelled my membership due to finances in June this year and to date I am still getting debited. I went to the Virgin Active in Karaglen and they confirmed my membership is cancelled by I am still paying for it. No one answers my calls even the Karaglen branch had no success in making contact whilst I was there. I send emails and no one responds. I asked the branch to help and still nothing. I am not sure what else to do... But the reason I cancelled is due to finance and yet I am still spending on money i dont have for a service I am not utilising.