How do I cancel my service? Brody D. October 11, 2021 19:33 To cancel your line(s) with our billing department you may email them as outlined here! Related articles Cancellation or suspension of lines & service How do I make a return? Can I buy a phone now and activate later? ; Does the phone come active? What is needed when reaching out to Gabb Support for help? Where can I purchase a Gabb Device? Comments 0 comments Article is closed for comments.