You figured correctly, Fireplaces. This is the same type scam OrangeClay posted, only it's scams impersonating IRS agents rather than DEA agents.
"There are clear warning signs about these scams, which continue at high levels throughout the nation,†said IRS Commissioner John Koskinen. “Taxpayers should remember their first contact with the IRS will not be a call from out of the blue, but through official correspondence sent through the mail. A big red flag for these scams are angry, threatening calls from people who say they are from the IRS and urging immediate payment. This is not how we operate. People should hang up immediately and contact TIGTA or the IRS.â€
http://www.irs.gov/uac/Newsroom/IRS-Repe...hone-Scams
"There are clear warning signs about these scams, which continue at high levels throughout the nation,†said IRS Commissioner John Koskinen. “Taxpayers should remember their first contact with the IRS will not be a call from out of the blue, but through official correspondence sent through the mail. A big red flag for these scams are angry, threatening calls from people who say they are from the IRS and urging immediate payment. This is not how we operate. People should hang up immediately and contact TIGTA or the IRS.â€
http://www.irs.gov/uac/Newsroom/IRS-Repe...hone-Scams