He claimed as item not received, opened case on eBay got full rfund, after that the tracking then later fixed and trackable found that he got the items already before he opened case to get full refund.
But due to a problem of the tracking result not showing at the time he asked for refund with the reason of not received the item. eBay refunded him and later I found that he was lying, contacted him showing the screenshots of the tracking result but he never replied.