Pfrog doesn't answer her phone or her door unless I'm expecting a call or a visitor. Most of the time my phone is off unless I'm expecting a call, and I look at my caller id before answering too.
Of course, I'm too chicken to look through the peep hole on the door unless I'm expecting someone ... Too afraid it might be the boogie man looking back in it at me or something - think Jack Nicholson in The Shining ... !!!
Last time I got one of those you've won something calls, they told me I'd won a brand new cadillac, I enthusiastically told them thank you and asked them to park it in the driveway and leave the key in it and hung up.
They never called back!