LOL while I've definitely gotten my fair share of these responses, try and make some small talk with the rep, be very polite, ask them their name, and ask how they are doing. Then say that you're really really really interested in this school, and haven't heard much of anything, and was hoping if you could give a more specific update? That is if your stats are close to/on point with the avgs.
If you're far off, then its tougher to get a more specific answer.
I think it's important to remember that they are humans, and they have feelings/some empathy for us applicants. At least for me its tough to be outright cold/furious over the phone to a complete stranger. I remember I was very polite, and human to an AdCom member from a very prestigious school and she basically told me off the record what was wrong with my application, and why I was no longer being considered. You'll always get the few staff members who are complete c**** to you over the phone, but that's life and don't let it discourage you.