Punjab National Bank [PNB] — Amount not received in my account

I made a transaction on 26-09-20 of Rs 2, 999 at amazon then i returned it and claimed refund.Now they are telling that they had sent the refund in my account (acc no.[protected]) but in my account the refund is not showing, i also got reference number by Amazon ie (30005102700270159889870).

Please solve my issue as soon as possible, i am in urgent need of my payment.