GCP: add docs for canceling orders

content/nginxaas-google/billing/overview.md

@@ -51,3 +51,15 @@ An NGINX Capacity Unit (NCU) quantifies the capacity for a deployment. Resources
 ## Review billing data
 
 Billing data for F5 NGINXaaS for Google Cloud is reported per deployment and can be accessed through the Google Cloud Cost Management Dashboard. Usage metrics and costs are updated hourly, allowing customers to monitor and optimize resource allocation effectively.
+
+## Canceling Your NGINXaaS for Google Cloud Subscription
+
+You can unsubscribe from NGINXaaS for Google Cloud by visiting the [Google Cloud Marketplace Orders](https://console.cloud.google.com/marketplace/orders) page. Please note the following behavior when you cancel your subscription:
+
+- Upon cancelation, all active deployments will immediately transition to a suspended state. In the suspended state, deployments will no longer be operational and cannot process traffic.
+- While in this state, you will still have access to your deployments via the NGINXaaS Console, allowing you to view or delete them. However, it will no longer be possible to update existing deployments or create new ones.
+- Despite the suspension of deployments, you will retain the ability to view, edit, create, and delete configurations and SSL certificates through the console.
+
+If you decide to re-subscribe to NGINXaaS for Google Cloud after canceling your subscription, all previously suspended deployments will remain deactivated. You will need to recreate your deployments from scratch.
+
+We recommend carefully reviewing your deployments and configurations before initiating the cancelation process to avoid any unintended data loss.