The buyer should open an 'item not received' case through Ebay.
You sent this with Simple Delivery so, once the buyer opens a case, Ebay should refund them and message you to say you don't need to do anything.
It has to start with the buyer opening a case.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
