Report it to the FTC, and their Project JOLT investigation:
http://www.ftc.gov/bcp/edu/pubs/consumer/alerts/alt148.shtm

Guy calls with hard to hear accent. Originally thought Indian but sounds like everyone else says Jamaican. Hung up first. Then he called back. Told him I could charge him with harrasment and hung up. He calls up again and starts saying he is backed by the better business bureau and the federal bureau of investigation. Gave him my name to tell him he has the wrong number. The guy says he knows my name. Problem is I never give my number out for anything other than business purposes and the phone is in my father's name. (1st red flag) Then the guys says I won 2.5 million dollars and a mercedes benz (yeah I wish). Total scam artist. Notified the REAL FBI so i hope that punk bi*** gets what's coming to him soon.

Jamaican area code. Did not answer. Scam. Must have won a $1,000,000.

i answered but couldn't understand a word he said

Called & left no message