First, Stephen Gornick, you hit the nail on the head. Also a very entertaining story. You're correct in that for people to act, they need an incentive. When a customer complains they just brush it off, but have some agency call them that could actually shut them down if they don't behave, then they suddenly stand all erect and yells: "Yes Sir, Yes Sir!"
Alternatively, you could email every address the bank leaked to you and tell them:
- The bank leaked their email addresses
- How using Bitcoins will allow them to remain anonymous and not rely on a 3rd party
- Links to more info about Bitcoin
Yes, I thought of e-mailing them all asking them how they felt about their bank distributing their corporate e-mail address to hundreds of recipients like this. Not sure though, if the bank ever found out, if the situation would turn against me, and create trouble for me.