585-318-1105

Officer Gary from the IRS. if I don't call this number, I will have BIG problems

Report it to the real IRS here:

IRS:   http://www.irs.gov/

http://www.irs.gov/uac/Report-Phishing
phishing@irs.gov
http://www.treasury.gov/tigta/

http://www.irs.gov/uac/Tax-Scams-Consumer-Alerts
https://800notes.com/forum/ta-8c2f64bf2b91fa5/irs-warns-of-telephone-scam

•If you owe federal taxes, or think you might owe taxes, hang up and call the IRS at 800-829-1040. IRS workers can help you with your payment questions.
•If you don’t owe taxes, call and report the incident to the Treasury Inspector General for Tax Administration at 800-366-4484.
•You can also file a complaint with the Federal Trade Commission at FTC.gov. Add "IRS Telephone Scam" to the comments in your complaint.

Said names Gary from IRS. Something unintelligible and then something about wreaking havoc and big problems if I don't call back.

I got the same call. Sounds like a Scam.

It is a scam.
here is the link from CT government announcing the scam

http://www.ct.gov/ag/cwp/view.asp?Q=544088&A=2341