iCAD Text Paging System is a service provided here free of charge. You will receive push notifications on your phone via an App called Pushover
Download the Pushover App for you device. Here
The app starts out with a 30 day free trial, but then cost a one time fee of $5.
Navigate to the subscription page, and click the link below the agency you wish to follow.
In the Pushover App on your device, you can unsubscribe from any of the lists you are subscribed to.