Hi. Even people whose first language is English get caught out by this offer - not perhaps by the 6 month lock-in, but certainly by the added Cinema and Boost passes, which arrive via preticked boxes, a technique outlawed for gaining cookie consent, but used here to gain financial consent.
But when you say ‘you’ here, you aren’t talking to anyone from Now; we are all just customers here like you.
To talk to Now, your best bet is Live Chat.
The following link, which leads you to direct contact with Now, is for when the Community can’t help, and the Help can’t help:-
Avoid ‘Get Help Quicker’ there; you won’t.
Explain what has happened here, and hopefully they will sort you out with the cancellation and refunds.