So it isn't the fare I thought it was. Sorry.

Still, all you got was a reservation, not a purchase. You can still see the seats on LH because the reservation still exists. The ticket was not issued and you aren't entitled to get it at that price. You can call until you are blue in the face but odds of it going through are pretty slim.

Like I said, CO is pretty good about honoring errors when the ticket is issued. They're less flexible when the ticket isn't issued, just like most other carriers.

It is not your fault but that doesn't mean they have to honor it.

ETA: Given the date of the initial booking I thought it might have been confusion with respect to the changing of the award chart. The pricing doesn't make much sense in that context either so I don't know why it would've priced that way. But the 25K number was definitely not the right price.