Punjab National Bank [PNB] — Refund initiated by the Flipkart but didn't received it yet

Address:

HOUSE NO 70,AMANTRAN COLONY, KAILASH NAGAR ROAD, BASTI JODHEWAL,LUDHIANA

Respected Sir,
I have canceled the apple iPhone 12 mini (prepaid and the amount is 41199/-) from Flipkart on 28 Dec. on that day itself the seller has initiated my refund amount to my PNB account through which I have done the payment. but since that day I have not got the refund. I have talked with Flipkart customer care and they have shared the reference number 85215221363151790530519 .