No, that was a human. Most call centers permit you to "end the call" if somebody says something to trap you, can't be given a satisfying answer, and you can't do anything about it.

Railing against the minions won't help anything. Then again, I can't tell you who to complain at. That is the catch, isn't it? Leaving in droves is really the only option, but sheesh, I almost never run into customers with a discover card.

I don't use Discover myself, but yeah, most of the payment processors pull stuff like this. VISA, to their credit, tries to stay out of these issues, but they strike me as wanting to also flee at first chance given.