Keep in mind that ID theft is a huge problem, in fact while that CC number may not be one you recognize there is nothing saying somebody could have stolen your identity (OMG 2 FFLS running around out there
) and opened up accounts in your name.
I'd immediately contact your bank for starters, I'd also run a quick credit check through one of the major online bureaus just to make sure nothing nefarious is going on.
Likely it's just a scam and a ploy to steal your information but you never can be to careful and for GOD's sake don't give your information out to anyone just cause they ask!
Then again if somebody stole your identity and purchased lots of noodles on credit you may have a hard time disputing that charge!