Idiots with wrong numbers

I'm not saying that everyone who gets a number wrong is an idiot, but this lady sure was.

Phone rings. What the hell, I answer it. (This is at home, rather then at work, where I have to answer the phone.)

Lady: Hello, can I please speak to [name]?
Me: I'm sorry, you have the wrong number.
Lady: So you don't know [name]?
Me: No, no one by that name lives here.
Lady: You don't know her at all?
Me: No ma'am.
Lady: Okay, thank you.

Yes, I was nice, because I was busy being confused. I mean, wrong number means WRONG NUMBER. It's not like the numbers are geographically set and the intended recipient of the call is next door. (Mind you, she could be next door. Not like I know the names of my neighbors...)

Let's face it, the proper response to "I'm sorry, you have the wrong number." is something along the lines of "I'm sorry to have bothered you then. Have a good day." instead of asking if I'm sure. Of course I'm sure. I live here.