Received a call today with a similar message. The caller was definitely foreign, so I hard time understanding him. I believe he said there was a lawsuit pending and that he hoped I would call him back and settle it. He will be waiting for a long time.
I also suggest being careful calling back a call like this as they can sometimes be linked to a foreign telephone company and you will end up with a huge bill charged to your regular bill. Not saying that this one is.
Yes, I got a call from these slimy scamming scumbags from Mr Sargent and his so called law office, he was calling me several times from Dallas number and private name from same number. What I suggest is when they call and harass you then call them back 50-100 times a day, tie up there answering service and phone line, with enough people doing it and tie up their lines they won't get much time to call anyone.
Called on my cell phone saying a Federal warrant for my arrest had been issued and an officer would be arresting me in the next 3 hours. Called a friend of mine who works for the Secret Service who informed me they go by the title "Special Agent", not "Officer" and they were aware of this scam. So when I called back to speak with the "officer", I asked how much I owed and was told $5,800 for tax year 2009, which I knew I did not owe. I baited them and asked how I could resolve this today over the phone, and by golly if I just gave them my bank routing number and account number they could debit the amount and voila it disappears! Of course the IRS NEVER corresponds by phone in this kind of matter, it is always by certified mail. I reported it to the FTC on their website, if you report it, put IRS financial scam in the header. The guy who called me had an accent like someone from India.