Some time back I bought something on eBay. It never arrived. I heard nothing. Very sad. I wore black for a few days. As you do.
It wasn't a hugely expensive item, but it was irritating nonetheless. So I took up the matter using the eBay resolution centre. And the great news is that after pressing a bunch of buttons the eBay judgement computer (or whatever they use) has decided to give me my money back. Which is nice.