Australia Post has lost an item I sold on ebay (first time selling in several years, and they lose one of just 14 items I posted). I paid extra for tracking because it was small enough to fit in a padded envelope, and the number was never in the system... so what's the point of paying extra for something that doesn't get used.

I went to the post office to get them to look it up, and was told to ring the customer service number... which I did, and was on hold for 23 minutes before someone responded.
They took down all the details, and gave me a job number.... and am not likely to hear anything else from them.
Which leaves me with having to eat the cost of the item, by refunding the buyer, because now I can't prove it was posted or delivered.
(for all I know, it was delivered, but the buyer knew it was not showing up on the website tracking page, so knows that they can get their money back by claiming it never arrived )