I keep getting calls from this number even though i'm on do not call list, i block their number then after about a month i take off few days later they start calling again, can't understand them most of the time

Called and got VERY RUDE and CRUDE when I told them this was a scam and to never call again... I was called every name in the book, enough to make a trucker blush. Yes, I gave it right back... have not heard from them since

Why do many, if not most of these scams originate from India/Pakistan?
Must be something in the water. Is not the Ganges river among the most polluted in the world?

The man talked in an Indian accent, knew my name, asked if i was home alone, told me he was close to my house,told me he  was [***] and told me to come outside and help him with that.

What he said more then likely isn't even true. Most of these calls are out of India and Pakistan.
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:
Read up on it here:
http://800notes.com/forum/ta-d20d86fdc3e145c/reporting-international-scams
https://www.econsumer.gov/#crnt
eConsumer.gov: Report Your Complaint
E-mail: econsumerwb@ftc.gov

http://www.stopfraud.gov/report.html
http://www.fraud.org/