What is it about Caller ID that makes dialing a wrong number an inconceivable concept? What kind of life do you have that you need to review your call log every morning and call back each number that you missed-even if you have no idea who's on the other end- and ask the unsuspecting answering party, "Someone at this number called me last night?"
If it was that critical, I'm sure the caller would have left a voicemail message, no?