Britbox is supposed to be free this week on xfinity.................but it isn't.

According to the on-demand section, britbox is supposed to be free for xfinity. However, for the last two days, it's not. It had some really interesting shows, but for some reason, xfinity decided to lie about it and not have it for free. Talk about false advertising. What do we have to do, stand on our heads until it finally becomes free? I bet it will finally come in on the last day. Please fix this problem.