Punjab And Sind Bank — I have cancelled one order but refund is not credited

Address:

Ailwal azamgarh, Azamgarh, Uttar Pradesh, 276001

I have ordered 1 product on 6 august but canceeled it on 8 august on 9 i have got msg from amazon that refund has been initiated and refence no is 545918 but i have still not got my refund and talked to banks customer care also but they r also not providing any resolution plzzz resolve my prblm as soon as psbl as last date for amt to be credited was 19 aug 2019 but still amt os not credited