Buddy AI Charged Full Six-Month Fee on Day One of a Free Trial

I signed up for a subscription on the Buddy AI app that was advertised as a three-day free trial. However, despite being called a free trial, the full six-month subscription fee of $15 was charged to my card on June 7th without any confirmation or authorization from me.
We used the app so my child could try it out, but my child did not like it. I then canceled the subscription on June 9th, before the three-day trial period had even ended. I do not find it fair at all that the full six-month fee was charged to me despite the trial period label, the minimal usage, and the fact that I canceled within the stated window.
For this reason, I am requesting a full refund of the $15 six-month subscription fee that was charged to my card.