Deaf with Rage.

It's awkward enough telling a customer that the store cannot accept their check after they've written it (the computer decides what machina checks we may use, and those we may not.)

Spending five minutes communicating that in hand gestures and head shaking to a customer who cannot hear or speak or read lips doesn't make it any better.

Then trying to inform her that her first credit card was declined? That picks things up to eleven.