Airtel — bill paid but not reflected

On 5th August, 2018, I paid RS.471 bill for Airtel Hotspot no : [protected] from Airtel App via UPI.
Money was deducted, but still got messages with due payment. Later, I paid via Paytm and messages had stopped.
I did not get refund of the money deducted from Airtel App.

UPI ID for unsuccessful payment via Airtel App :[protected]
UPI id for successful payment via Paytm :[protected]

I would like to get refund for unsuccessful payment done via Airtel App.