Call to learn more
"I was marveling last night at how well all of our AV stuff sounds and looks. We enjoyed working with your team. Please feel free to use me as a reference, if you ever need one."
"...of all of the dozens of different contractors I have dealt with on this project, you and your staff have been by far the most professional and easiest to work with. You do what you say you will do, you return phone calls promptly and your expertise and advice has been outstanding. I know this was somewhat of a complex and/or demanding install, but your company handled it with ease. Thanks again."