Personal: Well, that’s a different phone call

Here’s the *exact* transcript of a phone call I just received:
-RING- (yep, I got it on the first ring)
Me: Hello?
Caller: Hello – who is this?
Me: May I ask who is calling?
Caller: Sorry, I think I’ve got the wrong number.
Me: Yes. Bye
-click-

If this conversation is familiar and you called somebody at 20:04 on Saturday 19th of Feb 2005 from a mobile telephone number ending in 775 (with a total of five 7’s in the number), then hello! And thanks the the baffling call!