If you have subscribed via the Kindle Fire Hayu app, then you will need to unsubscribe through your Amazon account.
To unsubscribe you will need to go to www.amazon.com/appstoresubscriptions and use your Amazon username and password to sign in.
1. Next to the subscription, select Actions and then a management option.
2. Edit payment information.
3. View billing history.
4. Cancel your subscription.
You can also unsubscribe by turning off the auto-renewal in your Kindle Fire account. This is the same as cancelling.
Unfortunately, due to security reasons, we are not able to unsubscribe on your behalf. However, if you are experiencing difficulties then please contact Amazon Kindle Fire.