Go to your My eBay > Messages, click on the return message from ebay and then click on the blue "See return details" tab. Near the top right of the next page, below the blue "Reply to seller" tab you should see - "If you no longer want to return this item, you can close this return".
Only do after you have received refund, replacement or whatever the seller is offering. You won't be able to open another case.
