This is a scam. They are stating to be from the Treasury Department and will try to threaten you with legal action. The IRS would not contact you by phone, they will only contact you by mail. This is a SCAM, do not give any bank account or credit card information to them.
Woman with thick Indian accent and said they were from the Treasury Department and left a different number to call back than the one that came up on the phone (213-437-6046). Wanted my daughter to call her concerning something (could not understand what she said on the message). Not an agency of the government. SCAM!!! Block!!