https://www.gameshedge.com/storage-hunter-simulator-release-date-announced-october-pc-steam/
If you think about it, this is a nasty business practice where someone is unable to pay for the thing, so someone just decides to go off and sell their stuff.

This isn't an opinion on the game but on the business practice.

There is even (or was) a TV show about it where someone's things are auctioned off. It is essentially entertainment about someone getting screwed.

Maybe, there isn't a whole lot that someone can do with the items in an unpaid locker but damn.