Gaana.com — Renewal cancelation

Hi there i installed gaana for some coupon and im not using it frequently i thought of cancellation of subscription by the end of august 2 where it ends when im trying to cancel the subscrition its saying cancellation failed and there is no customer support readily available to lodge our problems and i got a message saying it will automatically deduct through paytm by 3rd itself . it was like a high tech scam. Please provide me details on how to end it soon