The phone rang maybe one and a half times. I looked at it, didn't know that number and wasn't going to call back. However, on my phone, underneath the number, were the words "slide to answer". I have to slide to open the phone at all! So at that point, I didn't want to open my phone up for fear that it would be a very expensive phone call, since that seems to be one of the scams going on. I'm taking my phone to the phone store and let them deal with getting this off of my phone.
Got a call, it cancelled after a couple rings, called back and asked to be added to DNC... The man said "You will not be able to save money anywhere you go shopping." Awesome.