Yes, you can cancel your subscription.
(i) If you have subscribed to a package whose duration is more than a month (e.g. 3 months/6 months/Annual etc.), minimum one month notice period needs to be given, prior to cancelling the service.
(ii) For a monthly subscription, you cannot cancel in the middle of a month. It will automatically get suspended, if you do not pay for the next month. If for any reason, you decide to permanently cancel your subscription, you will need to give it in writing (e-mail) at least a week before the end of your current payment cycle.