That's fine...but when they keep calling even though you tell them "not interested" or calling in the middle of the night. People do sleep at 10:00 or 11:00 p.m.
This number called me on my cell today arround 2:15pm pacific time, and they actually know my name. Then when I told him it's me, and the guy said "i'm sorry, I must have dialed the wrong number." I got confused and googled the number.