Ebay only assist with returns and refunds within 30 days of receipt.
After that, it is between you and the seller.
If you bought from a UK business seller, you should be able to find an address on the listing details. Try writing to them or ringing them.
"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)