How do I refund a charged subscription with no receipt on Apple Account?

• Where do you see the charge?
• Did you get a receipt emailed to you?
• Is the charge still showing as Pending? You will only see the receipt after the charge has been finalized.
• What is the exact description of the charge?

It is unclear if you see it in your purchase history or not as you say it says "no receipt", but also that you cannot find it in your purchases.

• View your purchase history for the App Store and other Apple media services - Apple Support
• View or cancel app subscriptions on iPhone - Apple Support