I get a call from this number and they hang up when i answer. then i called back to see what they wanted and all they want is my number i am calling from? i didnt give them my number, i mean come on im sure caller id comes into play

I got a call from this number also. I did not answer and they did not leave a message

This number is an army recruitment number

Yup, Army recruiter.  I actually asked that they call me but I wasn't home and they didn't leave a message.