I do the same, Clem.  Then again, I screw around with Nigerian princes, telling them I'd love to help them free up their vast fortunes by providing a bank account for them to bounce their bucks into.  I never let it go anywhere and always give them fake info - sometimes stringing them on for weeks on end.  Unfortunately, these robocall turds have much more high-tech means to determine that I'm just goofing on them and get rid of me much quicker.  I wish there was a way state's attorneys general could come down on them and get it all stopped.

I think having fun with these low life's is great, but those of you who give them fake credit card numbers -- do you realize when doing that you could be giving them someone's credit card for real.  I also notice some people make up fake social security numbers to give them -- this is also wrong to do.  Somewhere, somebody will have that number.  Like I said it's fun to mess with them but do it so no one else out there get's hurt.  I also think the more you mess with them the more they call.  Just like the window's scam.  I just block them.  This credit card scam has way too many numbers to block.  I just don't pick up the phone.  I check on here first to see who has called.  Then I either block or don't answer.  My phone only rings 4 times and goes into the answer machine.  Being on the do not call list is great, but they cannot track down spoof numbers.  

I when messing with them always give 666 as all the numbers.I also live on 666 Devils Lane ,Hellsville ,Hell zip 66666

HAVE NO IDEA WHO THIS IS BUT WILL ADD TO NO  CALL LIST

I do not answer calls I do not recognize... especially out of state calls. I get them almost daily-never the same state or number. Once when I was uninformed as to these bozo calls, I answered. They said they can lower my credit card rate. I laughed because I do not own a single credit card and when I told him that he just hung up.  What a tough job they must have. How many successful calls do you imagine they have in a day? I hope they work on commission. I imagine they quit real soon, thus making the credit card company able to keep their payroll to a minimum. They are using and abusing their employees.! BTW the do not call does not work with them because they do give a phone number on my caller ID. They never leave a voice mail message. I'm tired of the calls!!!