I Do Not Want To Use Hint Services

Through this complaint I would like to report an unwanted subscription and request both cancellation and a refund. Via the Apple App Store I first paid $1 to the Hint app around 17 June, but I did not get any useful result from the app and stopped using it immediately. Despite this, there are multiple further charges to Hintapp.com on later dates, including a €29.99 subscription fee, which I did not knowingly approve or intend as a subscription. I was not clearly informed that I would be charged repeatedly, and I have not used the service after the initial $1 payment. I request that my Hint subscription linked to my Apple account be fully cancelled and that all unjustified recurring charges after the initial $1, including the €29.99 subscription charge, be refunded. I also ask that no further payments be taken from my account without my explicit consent.