Do you mean the seller closed it?
If a refund has been sent, you would have an email from Ebay confirming that a refund is being processed.
Private sellers can refuse 'change of mind' returns and that would close a case.
So, did you buy from a private seller and what reason did you give for wanting a return?
"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)