Tamil Nadu Electricity Board [TNEB] — Refund not initiated

I have paid rupees 10624 to my TNEB consumer ID[protected] on[protected] at 23:44 hours through UPI payment.
Transaction ID: AX[protected]
UPI ID:[protected].
This amount was not credited to TNEB and I was fined for late payment.
Finally I have again made payment of around 11000 on[protected].

UPI provider and bank is telling that from there end amount was transferred to TNEB and they must initiate refund.

Kindly resolve and initiate refund.

ph.[protected]