It may be a scam. The Treasury Department claim is certainly a clue. But, it may be a false clue. I've noticed a lot of people don't listen fast enough to know the ACTUAL thing which was said. Sometimes, I'm one of those people. That's why I always record these calls. I use two recorders, in case some failure occurs on one.

If you look at the pattern (From an October, 2011 perspective.), you might notice different pitches associated with this number -- and during a single phone call.  This suggests it's a reasonably legitimate telemarketing outfit which doesn't always follow all of the rules, but at least tries. Perhaps they used this number for one campaign, then allowed it to "cool off" a while before the next campaign.

I do have to say that KP was on the right track. Tried to get good identification of the caller.

But, what was the "wrong address?" It would be helpful information, in case a pattern develops. And, it might be helpful in case there's other information without the address, but which would point to the right people . . . and the right address. (1234 Oak street, instead of 1324 Oak Street, for example. "Drive" instead of "Avenue." Some cities actually have a drive, an avenue, and a street all with the same name, or with similar names.)

If you ask too much information up front, they -- even some legitimate companies -- will hang up. It's a red flag that you're not interested in their product; only in making a complaint. Works better if you play them along, acting interested in their pitch. They want your Social Security Number? Start to give them one. (I take them from the death certificates of family members.) But, stop before you get too far. Ask a "small' question. "Who did you say you are?" Get them to spell it. ("Static" on the line, or an ear infection, maybe.) If they're making things up, asking for that street address again might produce a different response. Or, going back and repeating it later . . . but with a "mistake" in it. "1234" might be "12234" or "234" or "123" when you're reading it back. If they made it up, they won't correct you.

So, it may be a scam. But it might NOT be a scam, and we don't have enough information to tell the difference.

I wish I could help with the identity, but they didn't talk to me, at all. Kinda hard to know anything (Or, by the way, buy something.) if they hang up.