This number called me too, they call me almost every night, they've left a voicemail once saying 'Hey you better stop calling my kid, or else I'm going to call the cops on you"
It sounded like a kid, but they won't leave me alone! I tried to call them back but they never answered.
And when I tried to answer the calls they hung up right away, so I don't know!
These people are on the dating websites as well. Be VERY careful. 239-400-0550 is the number the "Charles" was calling from when we started communicating by phone.
This number is calling my 13 year old daughters phone they know her name and claim to be recruiting for a college. My daughter said she had not contacted any one and they hung up.