The chatbot is just an automated animated index into the Help.
You need to talk to Live Chat, staffed by real live human beings, about this.
Get in Touch (all the options, and the best place to start):-
On a screen with big buttons all around, you may find the link you need is under a tiny green arrow, so be vigilant.
Live Chat and Send Us a Message:-
On Live Chat, when you can get onto it, keep your answers short, sweet and prompt, or it will time out on you.
If the person you are talking to doesn’t seem able to understand your issue, ask to be escalated to the next level of help.
<If you can’t access Live Chat and nothing happens, try a different browser from your usual one (Internet Explorer, Edge, Chrome, Firefox, Safari) on which you haven’t disabled pop ups, third party cookies or indeed any cookies, and haven’t set an Ad Blocker, as any or all of these things may prevent the Live Chat window appearing>
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.
If you take an offer that comes with a ‘free trial’ of Boost or another Membership, Cancel them straight away. You will still get the full duration of the trial, and if you decide you do want to continue with one or another of the trial products, just revisit the Cancel, and UnCancel it.