Amazon India — dagcros men's full sleeve hooded t-shirt

Address:

India

My self vivek jumde i ordered a product
Dagcros men's full sleeve hooded t-shirt worth rs. 399.00 from amazon on 25 july 2020. But my product was not available on amazon. I claimed for refund to amazon so amazon send me a message for initiating refund that they had initiated my refund on 25 july 2020at 01:23 pm, but yet i didn't get any message from my bank that for any transaction for rs. 399.00/- i called to amazon and they provide me a reference no.
Refund reference # 30005402080207102344821. I called to my bank "union bank of india" they said there is no transanction on that date after that again i called to amazon and discussed with this problem they advised to file charge dispute, (Reference no. "hsbcn[protected]") so i want to do charge dispute file. My amount is rs. 399.00/- and name - vivek jumde
Mobile no. [protected] my account no. Is [protected] ifsc code - ubin0544060
Please help me to credit my refund rs. 399.00/- in my account. Please file charge dispute. Kindly help.
I am enclosing here mail image which is recieved from amazon.