@Anonymous User
Welcome to the forum. For future ref all month passes/free trials renew automatically and need to be cancelled if you don't want to continue with them. Make sure you've cancelled it now if you haven't already. If you pop onto live chat and explain what's happened they may be able to refund you, see what they say.
To get to live chat, go to the following help page and choose the live chat option.
https://help.nowtv.com/contact-us/how-do-i-cancel-now-tv
