Do Not answer calls from 203-456-7051 and do not call them back. This is a scam robocall claiming to be the I.R.S. and the caller is trying to scare the intended victim into calling them back. This is what they say:
Hi this is Officer Neil Brown calling you from the Criminal Investigation Department of the I.R.S. The matter at hand is extremely time sensitive and urgent as after audit we found that there was a fraud and was conduct on your tax filing which you are hiding from the federal government. This needs to be rectified immediately so do return a call on our direct line number the number is 203-456-7051 again 203-456-7051 thank.