Punjab National Bank [PNB] — Non credit of my refund

Sir, I have to say that Amazon issued me a refund of Rs 290 on 18/01/2021 by RRN74332741019101811411261 but it has not been credited in my account till now. I have already submitted a complaint in my branch as well as online but there is no resolution till now. please help me to get my money back. Details are as follows.
Name-Amit Saxena
Father's name-Mr. Surendra Narayan Saxena
Account no-[protected]
IFSC code-PUNB0157010
Branch-Kasganj (O.B.C.)
State -U.P.
Mode of transaction-debit card
Last digits of my debit card-1566
Contact no-[protected]
I am sending copy of statement for your kind consideration.
Thanks
Sd.
Amit Saxena