Who called from 7082797671

i keep getting calls from this number and when i pick up, there is no one on the other side.

i keep getting calls from this number too. who/what is it about?

i have also received 2 calls from this company and they said that i enter a contest and i won a prize but i never got a chance to call back

I didn't really answer,I just hit talk and end button,disconnected end of this call.

I had a call from this number.  He said he was Bill from Prize Distribution and said my " entry" was submitted, and although the contest is over he had, " Good News".  He said to call him at
800-301-3436.