Please watch a video on Youtube showing a DPD courier refusing to handle an iPhone sent by SKY. Just type DPD COURIERS AND THE TWILIGHT ZONE and you will be directed to the video.
The same courier failed to deliver the parcel the day before as well, when he took a picture of the door of our house, did not ring the bell (we were home, waiting for the important delivery) and left. Then DPD sent an email "we are sorry we missed you" with a photo of our door. It's infuriating!