You are in China and these are the UK boards.
Advice is based on UK terms and conditions.
You need to stop messaging the seller as they are not responding and use the Ebay Money Back Guarantee to start a return of the defective item.
"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)
