Who called from 2028641130

keeps calling me that he's from IRS and there is a claim against me.

There is a fairly common IRS or "tax scam" being practiced by scammers in both Canada and the USA.
USA tax payers should read this:
http://www.irs.gov/uac/Newsroom/IRS-Reiterate ... -Telephone-Scam

I got the same exact message ...

Called me several times in one day. I left a great message and some threats. No more calls so far.

Got a call yesterday from this number to call back and same story goodluck. I called back no answer. It's a scam sounds like