lost item

Ive been trying to work with customer service but I'm stuck at a stand still of them trying to get into contact with my uber driver. I left a pair of headphones so I did the lost item thing for $20, it said it was returned (while I was not home) so I paid the $20 and when I got home they were and are absolutely no where. I also tipped well to begin with so this came out to he like $39 for the trip, tip, and not the charge. I would like my $20 back for the item I lost and was not returned but I don't know what to do at this point. The driver is saying he returned it (at a address I've never seen) and headed it to the owner while I was AT work.