[mothered]

Heads up: Last time I ordered from ASOS (aged account, one previous legit order, no refunds) I tried to refund 1 pair of shoes, and buy 2 legit. (The one I tried to refund was the second most expensive). They said they will do an investigation and the next day they closed my account. Complete fail. I used missing item method. Wouldn't recommend doing them.

I tried to refund 1 pair of shoes
I used missing item method.
They said they will do an investigation
they closed my account
Complete fail

That's because you didn't apply your method against the nature of the Item. "Any" company and "anyone" can be SEd.

The shoes would've registered a significant weight on consignment, and when the Investigation was opened to cross-check the details with the carrier, It would have been deemed as delivered.

How would you handle this?

By not using the missing Item/partial method.

It's pretty much common sense.