What to do when an part of an item sent to buyer got smashed in transit despite proper packing?

[mauimiko]

I'm new on this platform and am not sure what to do for a smashed item which is obviously the post office fault as the box is crushed and a glass container busted.  Do I contact Ebay, the post office, give the buyer a partial refund?  Please help.  Thanks Kathleen

[lady_madonna]

@mauimiko 

Refund your buyer in full then file a claim with USPS. Have the buyer keep the item & packaging in case the post office needs photos.

[mauimiko]

Thank you for your help; however, I sent this thru Ebay shipping label, so post office will not accept and it was only partially damaged (part of the item).  I refunded the shipping to the buyer, but is there a way for me to get my cost of shipping from Ebay?