Why Blizzard don't want my money?

I want buy Diablo remaster, but Blizzard desided that I shouldn’t. For European region (Ukraine) they set prices in rubs instead of ukranian hryvnas or at least EUR
I asked support to help, they said that for Ukraine currency of shop is russian rupees and they can’t fix it.
I don’t want to pay in money of country which kills my friends and compatriots.
Blizzard why you can’t list shop in normal currency? Why you don’t want my money?

I will not pay in RUR. See you later.