Terrible. I wrote 6 emails complaining about not receiving the item. But for all 6 emails, they sent me a tracking URL that returns 404 error, closed the issue ticket without my agreement, and in the end claimed that they can't refund because the tracking says it was delivered.
NOTE: I DID check the mailbox and surrounding area. I DID ask my apartment managers. I DID contact the local post office. I DID ask my neighbors. My neighborhood never experienced this situation.
This is the definition of a SCAM.