Use the link in the solution and that will take you to live chat.
If that fails, drop customer support an email. Address in below picture.
I'm also wondering this. Its concerning that NOW did not even reach out to customers who purchased for this particular game.
It’s not up to NOW to contact customers about a game, they aren’t to know about you purchasing the membership to watch a specific game.
If you want to get a refund, use the link in the post up from yours to get in touch with NOW staff.