Ebay seller sent defective/damage macbook?

I bought a brand new Macbook for $1150 on ebay. After receiving it and using it for 28hrs, there were a black stripes going across the screen. I contacted the seller to check and see if this was a used or defective unit. The seller stated that it was new and it might have been damage during shipment. So instead of taking it back and refund me, the seller filed a claim with UPS. I already opened a case and escalated because the seller ignored me for days. So after a week the seller filed the claim with UPS, I did not receive any phone call, email, or anything regarding to the arrangement for UPS picking up the macbook. When I accessed my ebay account, EBAY CLOSED THE CASE in the seller FAVOR. I called and ebay said that UPS tried to contact me multiple times but couldn't reach me. When in fact, I did not receive any phone call or email. I did received one single email when the claim first open saying that UPS might have to inspect the package. So I called UPS right away, they said that someone came by to pick up the package but no one answered. I then asked why I was not notified before this arrangement??? UPS replied, "well.... you need to contact the shipper". So I then contacted the ebay seller again, he/she said that he/she left a message with the claim department. I haven't heard anything since..... Is there anything I can do now?