I worked customer support for a major computer manufacturer for three years on the overnight shift. I can sorta sympathize.

Imagine getting 3-4 calls per day, then one day getting 50+. Even if they don't all bitch at you, the few that do can easily screw up your day

Of course, that *is* her job, so she should still be decent. She was neutral when I talked to her, so she must've had a breakdown somewhere after that point :P