Wow. It's really not that hard. I'm sure there was at least one computer connected to the internet in that building where they could go to Google and type .002 cents * 35,893 and come up with the answer 0.71786 U.S. dollars which translates into 71 cents.
I love Cingular. Around this time last year, our phone bill was $1700. I had made several very long phone calls and the entire time I was roaming. There was no indication on my phone that I was roaming, and our plan did not say anything about roaming. We called Cingular up and explained to them that we had no idea that we were roaming and our plan didn't say a thing about it, and they basically said "Oh ok, we're sorry. We'll change your bill to your regular $70."