This Community is a good place to ask for advice, but you will need to get in touch with NowTV, as below, for billing issues.
So - as long as you haven’t watched anything on that Pass, and don’t watch anything on it, you might well get a refund through contacting Live Chat.
Set a Payment PIN on your account so that no-one but you can buy memberships on it.
Check your bank accounts monthly for any other unexpected payments to Now.
That way you can at least nip them in the bud, while you and Now figure out whose fault they are.
