Because in my eyes you would be no better than those Ebay buyers who message you saying they haven't received their item and want a refund. You message them asking a few questions and get told that no one in the house accepted the parcel and its not at the delivery office
Only then to quickly blame it on someone else when confronted by tracking details...
I'm not a seller so I had no idea people did that. That's kind of a ****y thing to do.