Originally Posted by
knit-in
Mar 1 [...] CZ 602 SYD-CAN
Looking now on EF, I'm seeing O1 X0 on that flight. Looking on delta.com, that business class seat is offered to me for 65,000 miles and 96.48 USD.
Maybe you got a subpar agent. Maybe s/he didn't understand you wanted business class (assuming you do). Or maybe the availability EF alerted to you was taken and then re-released, or taken and later replaced with new award inventory.
Either way: if you want that seat and you're online reading this: try again!