Does tracking show delivered on the carrier's website?
If it does but has not updated on Ebay, you can contact Customer Services and ask them to release your funds.
Otherwise, you have to wait 14 complete days from the transaction. So your money should be available to withdraw on day 15.
"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)