Good for you!! Inspite of our AG's office telling us not to do anything that indicates they have a working number, my husband likes to string them along too. But he didn't do a good a job as you did. When the man wanted phone numbers for the Bank of Outer Mongolia and the Bank of Inner Mongolia, my husband gave him phony numbers and then hung up while those other calls were bing made. He was not asked for the expiry date or id #.
No... what caller ID spoofers do is use a number in your country so you'll think its a relative calling you from the coast, when in fact that are actually calling you from India or Africa. They use computers to fake the caller ID information, and the phone companies allow them to do it cuz they are gettin paid, which means the phone companies are complicit in this crime.
Why do we have perfectly good nuclear weapons going to waste when they could be used to blow up countries that are engaging in this phone scam activity?