A. Check your payment history in the App Store. Open the App Store, tap on your profile picture in the top right corner, and select 'Purchased'. Look for Ayar and see if there are any duplicate charges. If you find a duplicate, you can request a refund for the extra charge through the App Store by going to 'Settings' > 'Your Name' > 'Subscriptions' > 'Ayar' > 'Report a Problem'. Follow the prompts to submit your refund request.
B. If you are being charged twice for a subscription, ensure that you are not logged into multiple Apple IDs. Go to 'Settings' > 'Your Name' and check the Apple ID you are using. If you have multiple accounts, log out of the one you are not using and ensure you are only subscribed under one account.