Telemarketer...That is because their system is checking the time when the number is answered. you can call the number back and be placed on the do not call list by pressing #1.
Your name should be Just Lyin'. When you call scammers back and press some number, all you're doing is confirming your number so it will get on more sucker lists and you will get more junk phone calls.
So what's your deal? Are you one of the scammers or just hoplessly stupid? Or both?