When I was growing up in New York City, our phone number, with two sixes, differed from that of an Italian dentist in that he had zeroes instead of the sixes (which are, of course, the key for the letter O). We frequently got calls for the dentist -- in Italian.
But the real kicker was one night when the phone rang at 4 AM. I slept closest to the phone -- in those days we only had the one in the kitchen -- so I picked it up.
"Hello?"
"We got one for you."
"Huh?"
"We got one for you."
"One what?"
"Isn't this the morgue?"
I don't think I got back to sleep that night.
Turns out our phone number was off by one, in the first digit, from the city morgue. Thank goodness people usually get the first digit right ...
Mark