They keep calling and threatening to come to my house and handcuff me for tax fraud. The number is 202-241-3634

If you call the number back theres a recorded message saying IRS Washington DC.  Leave a message and phone number. Talk about fraud.

6/11/14 Same thing hear.  irs scam. same forign voice Indian from india I believe.
I just have to say the US legal system should have had this shut down by now.  When I called the police to ask about it they where like "do you have a PC?  I said yes.  The officer said then you can look up the number."  In the end he told me to ignore it if i did not give them any money.......
That is crap do your jobs before some old person gets scammed.  This is simple shut the dam phone number off.  Do anything you lazy fat [***] police............  

You should go in person to the police station.  Make a formal written complaint.

Here is who to complain to, to "shut the dam phone number off:"

(1)  First, verify that this is a magicJack number by searching for it at http://www.phonevalidator.com .

MagicJacks are readily obtainable outside of the United States for about $100 US and can come with up to a year of free calling to the U.S. and Canada.  In India, see, for example,
http://magicjack.in .
So it doesn't take long to turn a profit, even if only 0.1% of the people they call are stupid enough to believe the scammers.

(2) Second, report the abuse to YMAX Corp.  This is a fully-owned subsidiary of the company that sells magicJacks.  YMAX Corp. is in charge of assigning telephone numbers to magicJack devices.  I have seen reports that they are pretty good at responding to complaints and may be able to permanently shut off a magicJack device, if necessary, so that it can never be used again.

The YMAX Corp. main web page is at:
http://www.ymaxcorp.com
and their site giving information on how to lodge a complaint is at:
http://www.ymaxcorp.com/contact.html

(3)  Use "live chat" on "contact" web page of YMAX Corp. to initiate a "live chat" to make your complaint.