So Dumb

There is this guy who is under Help Desk who is darn irritating. He always calls the wrong person extension all the time. To me it is pure ignorance and it is pure dumb. Example there is 2 person extension and the extension no 1 is mine and 2 is other person. So when he wants to speak to me he call extension 2 and when he wants to speak to my friend he calls my extension. He actually knows which extension goes where yet he still does the same mistake...