If you received the item more than 30 days ago, you are outside of the Ebay Money Back Guarantee.
If the seller is no longer using Ebay, then Ebay can't block their listings or take any action against them.
There is no way of getting a refund through Ebay after 30 days.
How long ago did you buy the hairdryer?
"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)