just got the same call, I won a government grant and that I needed to take this number down, my so called grant ID # JK202 in my case.  So I played along took down the number the whole time trying not to laugh, then he gave me his managers number 425-296-7936, and said you need to call right away, in the next 5 seconds, blah, blah, I let him continue to insist I call, and when he got around to, "so can I tell my supervisior to expect your call? "  I said sure why not, but I can tell you right now, I am not calling anyone because this is a scam, and I was not born yesterday.  So shame on you! Click went the phone.