Just got the same call. They want to verify my address and card# so they can send me a free $100.00 gift card to wallmart. They had my personal info, but didn't know what bank my credit card was from. I told them I would not give out any personal info over the phone and he became rude and buligerent. I became more rude and beligerent and kept him on the line until he finally hung up. IMO the only way to get these people to go away is to waste their time. They will keep calling back if you don't make it painfully clear they have no option to swindle you. I believe they get their information from some online purchasers. I used my card to buy something online and 5 days later got a call from these folks. (the first time.) I immediatley canceled the card and had a new one issued. When they called me back today (about 6 weeks after the last call) the referenced the same card # and not my new one. Clearly they are up to no good.
They keep harrassing me everyday over and over again asking for a Jim Hansen. When I instruct them not to call again they keep calling back. I called the number back and press 1 to remove my name from list but keep calling. This is definately harrasment and then they called back from another number 619-801-8142.
I've been getting calls from this number 323-429-7535 AND 9097599176. 12 calls from the 909 number yesterday and I expect a repeat on the 323 number today. The one time I did answer it was much the same as other callers have described. I told the caller that I'd cancelled that account months ago. The caller thanked me and ended the call. Apparently they don't bother updating their system. The caller had a foreign accent though I couldn't place it; maybe Indian or one of the Eastern Bloc languages.
If you use a Blackberry, you might try using the Black & White List application, which, once you add the number to the Black List, will intercept the call and direct the caller straight to voicemail. I typically don't know I've received a call until something legitimate comes in and I see the missed phone call message. In my experience, these kinds of callers NEVER leave voicemail messages because having a legitimate call back number would leave them open to thousands of complaints not to mention legal action.
Basically, it's just a phone variation of web-based phishing scams.
I seriously doubt that the standard number they use does more than go to a recording that does absolutely nothing when it directs you to press 1 to be removed from the list aside from recording your phone number so that they know they've got a live phish. If they get nothing else from you, they'll be generating a list of live phone numbers which they can sell to some other equally slimy organization.