[OJFord]

You haven't taken receipt of the package by it being dumped on your doorstep. (I suppose with the exception of a delivery instruction 'leave on doorstep'...) While it may not be 'their fault', the choice of courier and their instructions is; it's also to some extent a cost of doing business.

That said, I seldom see or have stuff left outside in the UK - assuming no 'if out' instruction - the vast majority of the time it's a 'sorry we missed you' note or occasionally with a neighbour/over the wall.