It's a scam.......watch out!!! Rude people who doesn't even know how to talk in the phone and asking for you to give them "my inforamtion"????
Are you serious???? I didn't know "Nation Wide" now, it's on India....it should call, "World Wide"

Receive calls from this number and no message is left.  When I listened to message all I could hear was a noise in the background that sounded like paper being crumpled up.

Caller ID says "Nationwide" and she used my last name and asked me to confirm I was a given address (which was not mine).  I asked why I should.  She said she could not tell me the purpose of the call unless I verified.  I told her I did not care what the purpose was, it was her purpose, not mine.  I asked where she was calling from and she said "Nationwide Credit Services" which I took to relate to getting a credit card or better rate on credit card (got a call like this earlier today).  I said No, what city, state, or country.  She said India.  I told her I thought she was a scam and to go scam someone else.  Told her a couple of times before she hung up.
Called back to the number, asked whose it was, and he said "Nationwide".  I asked where he was calling from and he said India.  I asked about the local number and he said Nationwide has an office in Kennesaw.  

Could not find any (free) information on reverse lookup other than a land based line.  Telephone exchange is apparently SMYRGAPF95C, which looks like Smyrna.

Same here, I get these about once or twice a day.