Is there a reason why there is no transparency with return credits when a buyer claims not as described but nothing wrong with the item? I could have 10 returns in month, try to claim 4 credits for buyer abusing the system yet only get 2 credits. Get no notification of which credits are accepted, only a credit on the statement. Large items cost more to send back yet eBay only part refund the return even if buyer abused the system

eBay seem to be promiting part refunds on social media yet fail to warn sellers that ebay keep the  fees for part refunds. Again why is this?