Actually, the real problem is you

ME: Hi, how can I help you?
CALLER: Yeah, I'm calling because there's a mispelling in the address book.
ME: Okay, and what name is it?
CALLER: Do you want the wrong spelling or the right spelling?
ME: Give me the wrong spelling, so I can find it
CALLER: Okay, his first name is Bob, and the incorrect spelling of his last name is Kowak.
ME: *typing* Okay, I see the entry. And what's the proper spelling?
CALLER: Koack
ME: Noack? *typing* Oookay, well you see, your problem here is not that Achim's last name is mispelled. We have two people: Bob Koack and Bob Kowak. They've got two separate entries in the address book which are spelled correctly for each of them.