Called, left no message

Just a call and no message. It's from Cheyenne , Wyo. I don't know anyone from that town?

(307) 222-6699 called me at 10:20 pm, I answered thinking it was an expected call and then it started ringing at me after I answered it. 10 rings later, it was picked up but no one said anything. I said hello a few times and got nothing. I tried calling it back and got a recording saying the number is not in service, check the number and try again. No clue here

I got a call from this number at 2:24 AM, it made me soooooooooo MAD! !  cause once I am awake very hard for me to go back to sleep, but  when no-one answered, that makes me even more pissed..I hate when people are ignorant like that..

Not sure who this is. No message left.