FinnAir When I cancelled a flight, FinnAir kept my ticket money without either a refund or credit on another flight Helsinki, Finland Nationwide

I purchased two airflight tickets with FinnAir from the US to Moscow, Russia.  During the Russian invasion of Ukraine, I decided it would be unsafe to be in Moscow during a time of international conflict so I cancelled the flights.  When it came to getting my money back they wouldn't give me anything because it was nonrefundable.  When I asked for credit for another flight, they refused because the ticket was cancelled.  So the net result is they have a couple thousand dollars and I have absolutely nothing to show for my payment to them.