I have had 4 no shows from Window World Nashville installers during the original installation period early in 2014 and 2 recently for a warranty problem. Their service manager even showed up to my front door once early on and told me that he was a reputable person and had a lot of integrity. That does not seem to hold true when it comes to servicing our purchase.
Their subs just don't show up nor call when they miss appointments and management doesn't seem to care. When I contacted their General Manager directly he didn't even attempt to call me or follow up.
Their product may be good, only time will tell, but their service is terrible. If you feel like being held hostage in your own home waiting on someone you're in the right place. If not, you will be better off calling the cable company or satellite provider. That may be less frustrating.
Review about: Window World Installation.