Backordered doesn’t mean canceled. It means it’s coming, just not on your timeline.

Delay and refusal feel identical while you are waiting and they are not the same event. Something still in progress is still in progress, even though the only thing you receive in the meantime is silence. Your nervous system reads silence as a no, which is worth knowing about, because it is frequently wrong.

When you are waiting on something, separate what you actually know from what the quiet is suggesting. Ask for an update once, politely, and then let it be. Meanwhile keep other things moving, so the wait is not occupying the whole room.