There is a whole drama going on with the Japanese release of #ProjectSEKAI.

They released a "Bloom Festival" Gacha (I don't know much about it). To my understanding, they made a mistake about some certain cards not being pulled at all, yet players spent on tons of crystals.
They made a statement about the mistake later on their official Twitter account and gave out 3K crystals to all players. They are still not happy, as some have spent on more than the amount.

It's a fucking Gacha. Of COURSE you won't always get what you want, and of course you won't get proper refunds, if not even at all.

I'm not defending Colorful Palette. They screwed up with something, yes, but you all should've been careful in the first place.