Last week my wife received a huge box that she hadn't ordered. Our address and her name but not ours. She called to inform them that it could be picked up from our place and resent to whoever ordered it, but she was told "thanks for informing us and just keep it". Several items worth $150. The week before that, she called about another delivery that was slightly damaged and wanted to return it for replacement. They also said keep it and they'll send a replacement.
So yes, they seem to not want to bother with returns at all.
Anything you receive in the mail, unsolicited, with your name on it, you can keep...No need to contact anyone...It’s the law.
The law is there to prevent low-lifes from sending you something you didn’t order, then sending you a bill for it later.