You can cancel Viki Pass at any time!
To cancel, go to your Viki Pass Settings and click on 'Cancel your subscription', take the one question survey and click on 'Yes, please cancel'. You should receive a cancellation confirmation email and will continue to see benefits until the end of your billing period.
If you have an iOS subscription, you can learn how to cancel it here.
If you have an Android subscription, you can learn how to cancel it here.