I'm a foreigner living in japan, and after trying the Heavy Rain game demo, which had all languages included, I decided to buy the full game. It was written containing all languages in the description, and didn't have a warning like Steam does, saying the version is limited in my country or anything.

Sadly, the version I got is only the japanese one! So with only japanese, english, and apparently some censorship (usual in jap version)... and of course no international languages.

I contacted Epic Store customer service, but after 36 mails (yes, really, 36) where they kept answering random stuff that have nothing to do with my issue, or saying that I was wrong, lying that I could select any language in it (there are no international voice and text files in the game folder), they refused to give me a refund, because the game was bought more than 2 weeks before, even if my play time was only few seconds...

Their customer service is by far the worse I ever seen in my whole life, and I have been working in a shop aftersale service for 8 years!

Them not showing any warning about the region limit is false advertisement and should be punished by law.

But what can I do against a big company like Epic?

So, bottom point is that if you are living in a country that might have language limitation, and want the international version, don't buy it from the Epic Store. The region differences are never written.