Punjab National Bank [PNB] — refund of cancelled product

Address:

Gurgaon, Haryana, 122016

My refunds made by amazon.in on 24 jan 2019 but not credited to my account till today they provide me (Rrn) which is successful by amazon but pnb refuse to credit any amount i am providing rrn-75503729025026494690930 they also provide me txn id which is transaction id1112jc6kka5r0m1ehs9augfew
Transaction id18nq896ej4f
Processor trace id5483029221046905404078 which till today not credited to my account what can i do amazon said file charge dispute form against bank but bank and customer told me that there is nothing like dispute form what can i do