Confused And Annoyed

Why is it so hard to get an answer about my school externship? I dropped my curriculum book off to a vet that I know quite well over 2 weeks ago. I have left 3 messages and none of them have been returned. At this point I'm assuming he doesn't want to help me out, so I have to go pick up my book and drop it off at another vet to start the whole process again. I called the clinic to ask if I could pick the book up, and was told that the vet is not in today, and no one knows where the book is. 

Great.

I'm puzzled as to why I have not gotten a call back. How hard is it to call me and say "no, we don't want you" or even "I still need more time to peruse this curriculum."

And I don't want to be rude by calling every day..but I'm really confused by the lack of communication on the vet's part. I know he is really busy, but a "no" or "need more time" call could be made by the receptionist. 

So now it looks like I'm back to square one. I'm really getting disheartened with this whole externship deal.