Recorded message from the "IRS" informing me they were about to sue me and to call the number back to clear up the matter. Also got another call with the same message from area code 970, also in Colorado, on the sameday

I also received an IRS message from this number and also another number with the same voicemail message.  I called my accountant and was informed that this was a scam. The IRS would send a letter in writing.

They almost had me, but I heard rap music in the background. Then the guy on the phone argued with me when I ask him for his agent ID number and what did the latter say that maild out to me about this matter. Another thing was that the man on the phone could not spell simple words or names. His English was very bad.