Not only did you prevent someone else from being cheated by the drug- addicted "card services" scammers, after a few times of playing games with them and wasting their time you will notice the calls slow down and then stop coming to your number. Your number will be removed from their robodialer list once they figure out trying to cheat you is unproductive, and they would do better trying to scam someone else. if you're interested in the script I used to stop the calls, simply Google my name.
Called very odd time around 8am on Good Friday. Caller ID showed it as Bartlett Inc. I do not answer calls from unknown callers. They left no message and reverse lookup doesn't recognize the number. Added to caller block list.