I received a call from this number saying they were from the United Stated Government and I was one of the 1500 people chosen to receive a grant  then they said they needed to verify some info they said an address I said yes they ask if I was married and did I have a full time job and when I asked them what does all of those questions has to do with them mailing me a grant check they hung up and I've been trying to call them back to let them know I work as scam buster for a living and they will be dealt with because I do trace all calls signals to the address I keep getting their voicemail.

Calls originate in India or Pakistan and they simply spoof local numbers.  Waste of time to call them back; they know they are pretty much untouchable.

I also got a call from this number claiming to be from the federal grant office

To report the fraud, go here:
http://www.grants.gov/web/grants/support/general-support/grant-fraud.html
Their number is listed , along with an email address, at the top of the page.
Also here:
http://www.consumer.ftc.gov/articles/0113-government-grant-scams

http://www.usa.gov/

To file complaints on Foreign company's and scams:
http://800notes.com/forum/ta-d20d86fdc3e145c/reporting-international-scams
https://www.econsumer.gov/#crnt
eConsumer.gov: Report Your Complaint
E-mail: econsumerwb@ftc.gov