Eh… I don’t think they owe you the money, it’s your own fault for buying this crap. Lootboxes are ALWAYS crap, NEVER will there be “good” lootboxes or anything like that (you can even look what you can get, 90% of the items are crappy things that either no one needs or can be bought ingame anyways).
Just don’t buy this stuff. It’s really your own fault if you fall for lootboxes in 2018.
I hated them when they were first introduced in the item shop and I still hate them to this day (in any game), no company will ever get my money by selling me these things.