What would you do? ebay issue

Here is the synopsis from my pint of view. I sell this guy a "grab bag" of Zcar parts....everything from corner emblems to visors, to window handles, all for about $40. Well in the pic of the stuff there was a pig-tail fuse block. SO i send him everything i thought, except there was no fuse block when it got to his place. He asks about it, i apologize, and offer a partial refund, and ask what he suggests. He seems pissed and says he wants the fuse block....I offer a full refund, but he just says i should give up the fuse block. Well i tell him after looking really hard, i could not find it. So, i feel bad, and finally locate one (dam thing cost me $20.00) I notice he bid on a tail lite for a 71z that i had on ebay, he wins the auction for the tail light, primo condition for $51.00. SO i email him, and tell him i'll include the fuse block i found in the box with his tail lite. He wont email me back!!!! its like he is gone or something, or dead? Anyways its been 9 days since end of auction, what should i do? how long do i hang on to is stuff? Any advice?