Thanks for the info. I got a call too from 202-241-0406. Thank god... she has a bad english, bad VOIP service and looked like she was reading it from a somewhere. Thats enough clues that it was a scam. We cannot even understand her English to get instructions to respond :-). I work with many Indians here dont think it is even close to Indian accent.
Got a robotic female call today from this number. Sounded like voice message was pieced together. Claimed to be from the IRS. I know several people who work for the IRS and they said they only contact through mail and never by phone. Immediately knew it was a scam and googled number to see if I could find origin.