'manipulative,dishonest behaviour' comes into this. Seems a mistake was made, by them, on the tracking bit of the web site. It happens... maybe it shouldn't have, but it does.
I'm sure you would have needed to sign for the delivery, so there would have been no come back on you, would there?
'Just thought members should be warned as this could have easily gone very wrong if my laptop ahd disappeared with no calling card left for me.'
The worst that could have happened was the laptop didn't get delivered when they said it would.