An apology costs nothing.
It would have been incredibly easy for them to apologise, then phone the courier, find out what's going on, ring you back and let you know what they've been told.
When ordering from amazon I've had issues before, like ordering a cd which the delivery person decided not to put through letterbox, not to ring the doorbell, nah, he just left it on the wall by the door.
I lived in a pub at the time. A busy one. By the time I went out, I found an empty packet.
That wasn't amazons fault, it was the delivery guy, but guess what amazon apologised, told me since this wasn't the first complaint they are looking at changing the courier, and sent another cd with a different courier for me.