Someone I've never heard of called the other day. They were offering to install "free" security devices. When I told them I wasn't interested in some random joker installing cameras in/around my home, they asked how long I had on my existing contract. At that point, there might have been a couple f-bombs as I explained that I don't generally share information about my personal security with some [yep, there's one of those f-bombs right there] idiot that calls my cell.
They were probably just trying to get me hooked up to a monthly monitoring contract. Probably.