Why you shouldn't rattle off when someone picks up the phone.

Its been a rather frazzled few nights in the office lately so when i picked up this call i was already rather exasperated: (btw: i work for a business magazine in a publishing house that has 2 other titles)

me: hello (establishment name)
caller: (in thick China accent) hallo my company says you should have received the article already so i am calling to check if you have received the article.
me: erm, what's the article name and for which magazine?
caller: what magazine?
me: which magazine is your article for?
caller: what do you mean magazine? i have an article.
me: YES FOR WHICH MAGAZINE? WE HAVE THREE TITLES HERE.
caller: i don't understand what you're talking about. i have an article. why is your company so inefficient?
me: *sputtering* OK. what is your article name (i figure i can suss out which mag it's for by the title)
caller: C70294.
me: what the mother...
caller: ehwait. this is DHL right?

FAINT.