This appears to be just one more of a string of numbers from scam artists who have somehow gotten your name/address and want your bday and bank info to send you 'grant money from govmt'.  I'm getting these annoying calls from about 15 different phone numbers, many of them already listed on 'who calls me' from several different countries.  

Does everyone experiencing this problem of continued nuisance calls have AT&T cell service??
How these people are getting this information I would certainly like to know!