If I’m on the list am I guaranteed service? If I’m on the list am I guaranteed service? Is the service similar to satellite? Will tree coverage at my home effect whether I get service? Posted by Denise Hamilton on August 18, 2015 in You are guaranteed an onsite visit for service testing to ensure the best possible signal. The list is a prioritizing list that will provide service for the people listed first. Share this article: 1 About Denise Hamilton