The 3-week lead time for cancellation of my flight has come and gone with no cancellation notification.

So, I called the US Help Desk. After getting dropped twice (which was nice), I finally reached a HelpDesk agent in NY. I simply asked when they would be cancelling my flight scheduled for September 12.

She informed me that the flight had been cancelled some time ago. She had no explanation as to why I never received an email (I get emails weekly from Aer Lingus so it's not like they don't know how to find me).

After I "politely" refused a voucher, she told me that she had refunded the full fare to my credit card.

Assuming she actually did process a refund, this saga appears to be drawing to a close.

Never again.

8/29 Edit: Credit card refund received.