Are we reading the same post? "First, we’re going to refund all delivery fees paid by the people affected by this bug."
>Receive a full refund of the Instacart Express subscription >fee immediately >Continue as a subscriber of Instacart Express for the next >year. We’ll extend the end date of your subscription >through April 30, 2014. This option includes unlimited free >deliveries for orders over $35.
Still opt-out
Can you imagine the backlash if Apple started charging $99/year for iCloud and auto-billed everybody who didn't cancel the service?
Nonetheless, even if they did discuss refunding, the entire process seems shifty. Every service I use (I checked!) warns me five business days in advance by email that they are charging my card or sends a physical mail two weeks in advance. Instacart should be sending an email on each event with the delivery fee spelled out clearly.