This really drives me nuts

Having acquired the so-called "offer of place from Uni" and faxed it to the Immigration and confirm with them if they'd received it, now they said IT'S NOT WHAT THEY WANTED !! Rather than that, they said they wanted "evidence of tuition payment" ?! The thing is getting crazy now! So now I get to apply another document at finance and FAX again ! I'm pretty sure I've also submitted the payment evidence along with my passport!! I really would blame at the Immigration - why didn't you SAY THAT CLEARLY in the email, you stupid NZIS !!!! ...and WHAT HAVE YOU DONE with my passport in this 1 month !!!!