Generally, Ebay will only say an item has been delivered if that is what the tracking states.
Go to the case and check the tracking on the carrier's website.
iI it doesn't show as delivered, or if it confirms delivery to an address that is not yours, you should contact Ebay,
"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)