National Payments Corporation of India [NPCI] — payment failed but money not refunded

Address:

Mosaddi Mohalla, Railpar Asansol, Near Babu medical, Burdwan, West Bengal, 713302

I made a transaction on 02.07.2019 to a customer of bank of india, i was making the transaction through bhim app upi application provided by united bank of india, the amount of rs. 20000.00 was deducted from my account but the transaction failed, moreover i did not receive my amount back, i. E the amount isn't refunded yet. Please look into the matter as early as possible and refund the same at an earliest. Thanking you.
The details of my account is given below.
Name :md qasim ansari
Account number :[protected]
Failed transaction date - 02.07.2019
Mobile number - [protected]
Amount :20000.00
Bank: ubi
Branch : barrah
Transaction was done through bhim app