Wow. Verizon needs to hire some 5th grade (or maybe even higher, if at all possible) graduates. I realize it's stupid to believe at first that .002 cents is the real rate, but he did ask repeatedly to verify this. If they misquoted their rates to him, it's their responsibility to make it right and see to it that he pays what he was quoted.
If those reps at Verizon are reading this:
.002 cents/kilobyte X 35,893 kilobytes = 71.786 cents = $0.71786