Ebay only allow you to start the return process once. Otherwise, it would be completely chaotic and unfair to sellers whose funds could repeatedly be put on hold.
You should try your payment provider. If you have bought an item that was 'not as described' you should be able to start a chargeback.
"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)