State Bank Of India [SBI] — Refund initiated by Amazon but amount not credited into my account

I order an item whose worth is Rs.1289 on Amazon vide order no.[protected] on 15th May 2021. The order was cancelled by Amazon on 20th May due to Covid-19 restriction in local government. The Amazon intimated on 24th May through my email that the amount of refund 1289 which was initiated on 20th May 2021 with reference number 632527 and stated that it will be credited within 4 business day. But till date no money has been credited into my account