Cancelled contract Nov 15. Still deducting payment

I sent Viva Gym an email on 2/10/2015 to inquire on how to cancel my contract, I received a reply on 5/11/2015 more than one month after my first inquiry. I immediately followed the instructions and cancelled my contract, upon doing that I received and email specifying that my contract has been cancelled and from 30/11/2015 I would no longer be able to access the gym. With a big surprise I noticed that Viva Gym has been deducting payments every month since November 2015. After countless telephone calls that is never answered and emails sent with no response I'm at my wits end. All expect is a refund of the money deducted for the three months after the contract has been cancelled.