Paranoia? Just Annoying.

Two different people have called here today with no idea where they were calling.  They both said the same thing, ""someone called my cell phone from there."" Neither had any idea who or why...  What is the logic here?  ""Hi, someone doesn't want to talk to me, who I may or may not know, so I want to track them down and find out who and why and disrupt your work day right now  finding out. ""

Why call somewhere if you don't know who the hell you're calling?  If someone I don't know calls and doesn't leave me a message, I assume it was a wrong number or not important.  I don't call the mis-dialer and harrass them.  I've got 60 people here, shall I ask each one if they made a phone call until someone breaks and confesses?  And then what?!?  Tell them not to make mistakes dialing the phone ever again?  Yeah...that'll solve the problem.  How neurotic, insecure, bored and lonely do you have to pull that bullshit ON PURPOSE?