Indian tax scam. They utilize stolen financial and credit information to target potential victims. Aside from the heavy accents, they can use this information to be very convincing.
They called my disabled brother who is on SSI and said he was being sued by the IRS. He called me, very upset. He gave me the number and agent number. I called them and said that they weren't the IRS. They hung up on me (three times). So then I started calling them on different phones telling them they are not the IRS and cussed them out until they began becoming very frustrated with me. It was fun times.