Can I make a refund In case if I did't meant to subscription

I apply for 3 days free Trail of Live Wallpapers Now's App, which the terms and condition are auto resubscription on 27 February 2018. I think they should send me a notice E-Mail or ask me on 27 February 2018 again to confirm my decision for a renewal before they deducted my money or auto-renew the subscription. Although the Terms and condition are said about the renewal, but sometimes customer maybe forgets to cancel, in case if they found that it does not help or did not get a benefit from the App. it seems cheating on customer and very unfair. If it's possible, I would like to refund and get money back to my card, I already made cancel for a subscription because I'm not impressive for the service and did not get a benefit from the App.