Amazon India — Refund initiated by amazon but not received

Address:

Darhiram, Mirzapur

Name of shopping company:- Amazon
Name of Bank :- State bank of India Type of account – Saving account Account No.:- [protected]
IFSC code :- SBIN0011239
Branch :- Padri Mirzapur
Reg mobile No.:- [protected] Transaction id ;[protected]
Transaction Date & Time:- 28/04/2021 & 00:04
Problem details - I have a saving account in the above bank and I did a shopping on amazon and due to the product is defective I return the product on which the company refund the amount in the bank account and also provide the transaction id. But the refund is not recieved in the account. When I visit to the bank branch they said there's no transaction from amazon they didn't refund your amount and this is the fake transaction id literally they said we can also generate a fake transaction id. When I asked them to give this in written they said please contact amazon and ignored. Expected :- I wants to know when the amount will be credited and please do something fast because if this type of transaction gone stuck then in future I suppose don't payment through online.