This number is used by criminals posing as IRS Internal Revenue Service. 374-274-8136. This is a federal crime posing as the IRS. To remedy and report is very difficult. The IRS is too busy and very complex to even report scams.
Here's what I copies from IRS.GOV.:
You receive a phone call from someone claiming to be from the IRS but you suspect they are not an IRS employee ...
1. Record the employee's name, badge number, call back number and caller ID if available.
2. Call 1-800-366-4484 to determine if the caller is an IRS employee with a legitimate need to contact you.
◦ If the person calling you is an IRS employee, call them back.
◦ If not, report the incident to TIGTA and to us at
[email protected] (Subject: 'IRS Phone Scam')