Why do there have to be two of me?

So tonight Alex and I got home from our ritual O.C. night at Hillery and Challis' to find that our answering machine light was blinking. Of course we got a little bit excited because no one ever leaves us messages (it's really kind of sad). So we play this message over and over and over trying to understand what the person is saying; they sound very inebriated. The message goes like this "Hi Mallory, it's Derek from just south of P.A. I've been thinking about you a lot and thought I'd give you a call because I'm in town." Alex looks at me like there is some guy I'm not telling her about, but I honestly can not place this guy. I actually scared myself for a minute thinking, "Oh no what if I do know him but haven't seen him in like 10 years and he has been stalking me?" Then it occurs to me that I don't know and have never known anyone from P.A. so how could I possibly know this guy? So then I start wondering how he got my number, and what was actually going on...so I called him. This is how the conversation went:
Derek: Hello?
Mallory: Hi, is this Derek?
D: Yeah! Hey! How are you doing?
M: Pretty good, I just got your message but I couldn't place who you were
D: Oh yeah, but then it just kinda clicked eh?
M: Well...no
D: Oh, this is Mallory Smith isn't it?
M: (as it is all coming together now) Yes, this is Mallory Smith, but you are probably looking for the one from Maple Creek.
AWKWARD SILENCE
D: ok, well...sorry about that...bye

So that was my exciting night...random guys calling for me and me left without the ability to simply say "wrong number" because when they confuse you with someone with the exact same name as you, you start to wonder if you're losing your mind