The agreed delivery location is not adhered to and...

The agreed delivery location is not adhered to and parcels are simply stored unprotected in the garden, although the enclosed property has already been entered and storage would have been possible at least protected from rain. If the unfortunate deliverers don't speak our language, they should at least be able to read and understand their employer's instructions.
A little tip: just pay the staff sensibly, then workers come who meet the requirements. A driving license alone is not enough!