eBay

I agreed to refund buyer but before item was returned buyer entered a bad tracking number Ebay in turn refunded the buyer before the item was returned to me and now billing me I still don't have the item Ebay knows buyer ever shipped it and now has r...

I sold a disturbutor and I am awaiting return of the item paypal and ebay refunded buyer with out me recieveving item back how do i file a case on this matter?

i listed used msd electronic disturbutor got from storage unit and being sold as is no return buyer said it doesnt work do i owe him a refund i didnt know if worked or not i had no way to test it ?