Booked through AC reservations specifically specifying standard not basic.

Checked confirmation a few hours later, it was booked in basic.

AC says basic fares aren't changeable, so they can't touch the ticket except to cancel and rebook.

But after cancelling, they can't find inventory any more on one of the partner flights on the itinerary so I have to accept a crappier itinerary on all AC metal.

Now imagine being someone who doesn't always check your confirmations to make sure you booked what you intended.