Latest Pet Peeve

Here's my latest pet peeve. You know when you get a wrong number and the conversation goes something like this (that is if your name's not Bob): Caller, "Is Bob there?" You, "I think you have the wrong number." Caller, "This is 555-6327, isn't it?" First problem here is even if they say the wrong number it's like they didn't believe that it was a wrong number, "It sure is 555-6327 and this is Bob. I was just kidding around with you." Second problem is if they said the right number they're still doubting the validity of your previous answer, "You know that is the right number and you must be right about Bob being at this number, let me see if I can find him." Seriously people if you call the wrong number just say sorry and hang up.