I used to work in a Craft store when i was in college. Once a week, someone would misdial my home number thinking it was the Craft Store (since it was only 1 number off, and the numbers were above/below each other on the keypad).

I'd usually explain to them that they had the wrong number, but ... since i worked at the store anyway, what were they looking for and i could tell them if we generally carried it at the store ...

craftstore (###) 742-####
my.house (###) 745-####

It always made me snicker, and my roomates always got a kick out of it too