Fund added through UPI, not reflecting in Appstore

Please see -> About billing for Apple subscriptions and media products in India

About billing for Apple subscriptions and media products in India - Apple Support

India

•           Apple ID balance (from adding funds)

•           Net Banking (adding funds only)

•           UPI (adding funds only)

To continue enjoying your subscriptions, you can pay with your Apple ID balance. You can add to your Apple ID balance using App Store Codes, Net Banking, and UPI.

See -> Check your Apple ID balance -> Check your Apple ID balance – Apple Support (UK)

If you update your payment method or add funds to your Apple ID balance, It would take about 1 to 3 business days in order to process.

If you're still unable to update your payment method, Contact Apple Support.

Check here -> Request a refund for apps or content that you bought from Apple.

Request a refund for apps or content you've bought from Apple – Apple Support (UK)

If you have requested a refund, you must wait until Apple has approved. Then you will receive a message from Apple.

Refunds are not guaranteed. For more information, see the Terms & Conditions.

You need to have a payment method on file, even if the app you want to download is free.

You have only one payment method on file, that is the reason that not available to apply for refund.

If you don't have a payment method on file, your account will be disabled or declined in the App Store and iTunes

You can check your Apple ID balance, see -> Check your Apple ID balance

Check your Apple ID balance – Apple Support (UK)