Got several calls in the last couple weeks, finally called that number back (at 3AM) and got a recording "This is St. Mary's prayer center..." - I'm praying these BS calls will stop, but I doubt they'll pray for that.
SCAM-this is one-at least 6 (or more) St Mary's prayer lines all in different area codes-you get prayers now (uh-huh) and get hit up for donations later. Think bad TV evangelists and folks like Elmer Gantry. They're playing on folks soft side for religion. They are sinners and thieves. There is a real St. Mary's but it isn't these folks. For prayers and real religion, try going to the local synagogue, temple, church, or mosque of your own faith. Consider getting a call blocker.
For what it's worth, the folks at the real St. Mary's are praying for these scammers/thieves/sinners.
Robob-diallers calling all numbers in a sequence is how they "got" your unlisted number. Being unlisted doesn't keep people from calling your number at random, you know.