Press '1'. Then make sure you rattle off some really offensive statements right when they pick up, just before they have the chance to hang up. It's a good way to relieve your stress..
Same scam with a different number. As a bit of an experiment, I have made it a point in the last 2 weeks, several dozen calls, to be professional with them and request that they place me on their internal do not call list. The typical response is for them to hang up mid-sentence on me with about 1 out of 6 throwing in a swear word. These are the most etiquette lacking individuals I have ever encountered.
THE BAD NEWS: Card Services calls aren't going to stop anytime soon.
THE GOOD NEWS: You can retaliate, reduce the misery, and even have some fun.
RETALIATE:
Waste these turkeys' time. Keep them on the line by acting like an interested prospect. Give them bogus data, including a combination of two different credit card numbers, scrambled Social Security digits, and a modified ZIP Code. Important: provide a credit card company's real 800 number.
After they call the credit card company, you can give them the same credit card info as before with two of the numbers transposed, thus causing them to make a second verification call. Or you can respond, "Guess what ... H-O-O-N-N-K-K [from a $6 air horn] you've been PRANKED! Call back tomorrow for more bullshot." Now they're the butt of your joke.
REDUCE THE MISERY:
Block the number, an option that becomes available on the iPhone if you click on the "i" on the right in the list of recent calls and scroll to the bottom. Unfortunately, Card Services will keep calling from new spoofed numbers, which eventually should motivate you to retaliate.
HAVE FUN:
Turning the tables on the perpetrators with mischievous deception and the news they've been duped provides instantaneous vigilante satisfaction. Plus you serve your fellow call recipients by slowing down this evil operation's efforts to defraud them.