Refund Request For Grok Subscription

I am writing regarding my “Super Grok” subscription, which I started as a 3‑day free trial through an in‑app purchase. After the trial ended, the subscription automatically renewed without my clear realization, and I was charged 5,000 JPY on April 30, 5,000 JPY on May 30, and 5,000 JPY on June 30, for a total of 15,000 JPY. When I noticed these charges, I contacted Apple Support and requested a refund. Apple only approved a partial refund of 1,833 JPY on July 20, 2026, as shown in the attached Apple refund confirmation, and the remaining amount has not been refunded. I have already canceled the Super Grok subscription, as shown in the attached subscription page screenshot, and I am also attaching the Apple payment receipts for the three 5,000 JPY charges as evidence. Considering that the subscription continued unintentionally after a short free trial and that I have not received a full refund through Apple, I kindly request that Grok review this situation and provide a full refund for the remaining portion of the 15,000 JPY that was charged.