Bajaj Finance — POS Transaction declined but debited from my a/c

On[protected] i made a transaction in bajaj finance regarding a loan amount payment through my UBI card ( Card no - [protected]) by POS machine. my transaction declined in POS machine but the amount deducted from my a/c (amount 28500).

bank want a copy of transaction statement for the same day for evidance that amount not credited in bajaj but they are not giving the same. and also they are not providing any writen documents that they not recevied the amount.

PNB brunch - New Market, Kolkata
Bajaj Finance - Rash Bihari Avenue, Kolkata

Bank A/c No :[protected]
Card no - [protected]

POS ID : POS[protected] KOLKATA (mentioned in bank statement)

POS machine details
Batch ID : 9101
PID : 522512

now i want refund for the same amount.

Kindly help with this matter.