[Jay875]

Sending items back to company that they don't even stock?

No.

The first port of call In the Inwards goods, Is to scan the Item to place It back In their Inventory.
It's clear that It will fail when  It's not a stock Item.

When this happened to me the company offered to refund me cash by either check or direct deposit since they didnt have anymore in stock,
They may also let you choose a different item of a equal value or give you a gift card but this really comes down to the companies policy,