I just got this call. Didn't recognize it and while I was looking it up I saw they'd left a voice mail. A voice wishing 'my fellow birthday club member' a happy birthday. Obviously the person who had the number before me was a member. hahaha.
LOL- Call came up on caller ID as "UNASSIGNED" but turned out to be from Toys R Us Birthday club. Didn't answer because of the "UNASSIGNED" listing. They left a voicemail for the "Birthday Person," whomever that may have been, who must have had this number before me.