Adidas — Refund not received since 27 days

Dear sir/mam,
I ordered adidas shoes from adidas.co.in on 14 feb 2023 order no - ain02668280 and on 18th feb i made the return request. The product was picked up and i received the mail on 21st that my refund will be provided within 14 days but since my payment was cash on delivery i called the customer care regarding bank details for which they had not sent me any mail. On requesting they mailed a form to fill in the bank details. I filled the bank details and submitted the form on 23 feb. But since then i had not received any refund i called them after 16 days of waiting they said they lost the bank details and mailed me the bank details form again to share the bank details on march 9. But still not received the refund. They are making me chase after them and i am tired now please help.
Refund amount - 3046.69rs