Normally postal services of almost all of Europe work in a way that
similar, in which case they should have left him a delivery notification, so that you can
to the post office of your ZONE and pick up the package that's usually on hold
about 15 working days, before being returned to the sender.
but also something out of the ordinary may have happened, as sometimes the postal service personnel are eventually and barely know their sector and these occur delivery messes.
If you know your mailman, talk to him so that he is aware of the next shipment or indicate to
@johannes another address where to locate him in a way easier... work, neighbor, family or pick up at the post office, etc...