Pretty much no-where. You could open a ticket, but you’ll either get fobbed off with a bot response that makes no sense, or you’ll get fobbed off by a real person who can’t do or say anything helpful. In either case, they’ll close the ticket as “resolved”.
You can add your voice here, and any social media you can … they might eventually pay attention, but equally they might just leave it untouched and unread for years … there’s a few threads I’ve seen that they do that to.