I have never received such poor service from a company. They installed near 3 weeks ago and have yet to install the 5 cameras they were supposed to (2 of which I paid for). I was sold on the initial package and then ended up paying $1,000 more for "upgrades" that never even came. Now when I try to cancel, I get hung up on because I won't settle for the "you have to pay the rest of your 36-month contract out as a early cancellation fee" bull crap.
I was oversold when I acquired ADT services. The glass cracking devices cost me almost $1500. Their price to me was significantly higher than published ads and mailers. The glass cracking devices sound the alarm if you sneez and/or drop the soap in the shower. I may recommend them but not to my friends.