I got this same phone call and my fiance did 2 hours later! I hope its not a telemarketer because they first day that the cell phones numbers were released I put both of ours on the DO NOT CALL list... money for me!
The 561-240 prefix is a Boca Raton, Florida land-line number. Called my cell phone today, but did not answer. If I don't know the number I DON'T ANSWER THE PHONE. IT'S THAT SIMPLE. These m-fing sob who call cell numbers don't pay my bill at the end of the month when they run up the minutes selling their CRAP. End of story.