We originally signed up with VOXCOM 13 years ago, who were purchased by Reliance Protectron who were then purchased by ADT. Reliance was pretty bad, but ADT has to employ some of the most inept people I have ever seen. In the last 12 months we have had at least 8 visits for one simple sensor. They send techs without the right parts, techs that don't know how to install the parts, and contractors who don't even have access to the ticket history to be able to fix or understand the issue before they arrive. Even though our issues have been escalated to the Branch manager in Calgary, we continue to run into problems over and over again. And this is just one issue, there have been others too! I would not recommend ADT to my worst enemy.