This help topic will explain how to cancel one or more of your DID phone numbers
Log in to the FracTEL portal.

Select Edit DIDs from the DID menu. 

On the Edit DIDs page select the phone number(s) you want to cancel and press submit.

At the bottom of the EditDIDs page there is a check box labeled Cancel DID Numbers.  Click in the box and the Submit Button.

The system will return a page like this when it is complete