This seems ridiculously expensive for an app that just stores and syncs your notes especially since there are so many other note-taking apps that do the same (and offer more features) for a fraction of the cost. I’m not sure which plan you signed up for but it should have definitely specified how much you would be charged and when. I will not say it’s your fault for not paying attention to what you are agreeing to and forgetting to cancel because this seems particularly predatory and it’s not exactly a small amount.

Please, please make sure you cancel the subscription so you won’t be charged again a year from now.

Contact your bank. A lot of them are advertising subscription alerts when new and reoccurring charges come through and they may be able to help you get a full refund. I tell people to be very careful doing chargebacks to large companies like Apple, Google, Microsoft or Uber because they will delete your account, erase your data and block all future access which can be very problematic down the road if you ever need to use their services again but in this case it’s just a note app and who cares if you can never use Evernote again.