If the item is faulty and you received it less than 30 days ago, you can use the Ebay Money Back Guarantee and open a return.
If you bought from a business seller, some sellers can make a deduction from the refund if items are not returned in the same condition, so, you may be penalised for not sending back the original packaging.
You won't be compensated for the payment you made for the item to be fitted.
"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)