Madhya Bihar Gramin Bank — Amazon refund don't credit in my account

Address:	At/po-purnadih ps-obra aurangabad bihar
Website:	[email protected]

Dear sir,
I beg to say that I vivek ratnam my account no is[protected] and rupay card no-[protected] I have purchased a goods from Amazon shopping date 05-04-21 amount 6199.and cancel the order 09-04-21.expected refund is credited 14.04.21 but this refund amount 6199 is not credited to my account. Till date. So please take necessary action as soon as possible.
Massage given by Amazon below mention:-
In case you do not receive the refund by the expected credit date, please contact the bank's customer care and mention the below RRN (Refund Reference Number).

Amount added to
RuPay ****3781₹6199

Order ID[protected]
RRN30005411001095218001188mbs