What reason do I pick for a refund due to an unclaimed package?

[bentley65]

I am refunding a buyer that did not claim a package and it came back unclaimed - return to sender. This went to a USA buyer. He has not asked for a return or refund. I just want to refund all his money asap because I  now have the item and from what I can see I have his money. When I look at the refund form no option is there for a reason as unclaimed package. What should I pick as the reason?

I did message the buyer and no reply yet. However I just want to refund and then sadly block him. I don't want to sell to a buyer that doesn't pick up their parcels.  I don't want to ship again to this buyer.

Thanks for any help.

[wilmcal0]

Have you considered that your buyer may have died (item not claimed, no message responses, no INR claim) and their famly knows nothing of your transaction.