I received a call from this number at 5:30 this morning! They left a message claiming to be the IRS. Do not fall for this one, folks! They even use a synthesized female voice so that you won't be tipped off by their heavy Indian accents. The real IRS NEVER calls citizens, especially from "Cell Phone TX". Block this number and report them to the Department of the Treasury.
Just got this call, too. Here's what I do when I get BS unsolicited calls like these. I never answer, but I call back to make sure it is an active number and that there is someone on the other end trying to scam me. After I confirm this, I save the number and give it out when ever I get asked for a phone number by some website that is trying to get my information just because I signed up for something. I'm hoping that all of the automated calls from the other telemarketers will call that number, and maybe choke them out.