Said his name was Alex Ferguson calling to help with a ytreasury dept problem used crime terms lefft phone number and repeated message on answering macine several times. Called earlier and did not leave message. Sounded like Accent fron India

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

Report the Calls to the real IRS here:
•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.

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Do consider getting a call blocking device or phone.. You can google them and many are around $40.00 or so.If its a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

"Since executed by US Treasury and 10-get-serious(?) attention. Ignoring
this will be an intentional second attempt to avoid initial appearance
before the magistrate judge Auto dan(?) Judy for a federal criminal offense.
My number is 413-749-5506. I repeat 413-749-5506. I advise you to cooperate
with us and help us to help you. Thanks. Hi this message is intended to
contact you. My name is Alex Ferguson and I'm calling regarding enforcement
actions executed by US Treasury and 10-a-serious(?) attention. Ignoring this
will be an intentional second attempt to avoid initial appearance before the
magistrate judge auto-grand(?) Judy for a federal criminal offense. My
number is 413-749-5506. I repeat 413-749-5506. I advise you to cooperate
with us and help us to help you. Thanks. Hi this message is intended to
contact you. My name is Alex Ferguson and I'm calling regarding enforcement
actions executed by the US Treasury and 10-to-get-see(?) attention. Ignoring
the...."
Message received on 03/31/2015, 12:38PM (PDT). Length 120 seconds.
Caller: (413)749-5506

this phone number is a scam, threatening to file a case etc....where can i report this to have them stop calling me and other people.

Same message: 3 phone calls in two days:
"Since executed by US Treasury and 10-get-serious(?) attention. Ignoring
this will be an intentional second attempt to avoid initial appearance
before the magistrate judge Auto dan(?) Judy for a federal criminal offense.
My number is 413-749-5506. I repeat 413-749-5506. I advise you to cooperate
with us and help us to help you. Thanks. Hi this message is intended to
contact you. My name is Alex Ferguson and I'm calling regarding enforcement
actions executed by US Treasury and 10-a-serious(?) attention. Ignoring this
will be an intentional second attempt to avoid initial appearance before the
magistrate judge auto-grand(?) Judy for a federal criminal offense. My
number is 413-749-5506. I repeat 413-749-5506. I advise you to cooperate
with us and help us to help you. Thanks.