I assume you are referring to e-mailing the ISU re today's judging??
One way would be to send a message via one of the ISU's Facebook pages. Or you could post a comment on one of its FB pages.
When people post comments on www.facebook.com/ISUFigureSkating, sometimes an official ISU response later gets added to the page.
(The ISU also has a general FB page, not limited to Figure Skating. I have not looked at either page today. Don't know what kind and what quantity of comments have been posted re Rostelecom judging.)
That's good information, but I meant--and should have made it clear--the misinformation the Brit commentators were giving out.