Amazon — Refund did not received

Website:

Amazon.in

I ordered 3 items from Amazon on 12th August 2021 due to some delivery address issue they asked to cancle the order and reorder the products . I prepaid 9497/- for the items so Amazon said they will refund my money to my account and provided me with RRN number for 3 of the products on 18th August 2021 . I was suppose to get the amount on my account by 3 -4 working days according to the Amazon customer service said but it didn't reach my account . I asked kept Amazon for several months and they said it is my back which is not releasing the payment so i visited my SBI branch and spoke to the help counter and the manager they said they are unable to help me because the payment was made my UPI . So i called SBI customer care they also refused to help me . Today i again called the customer care of SBI and asked them to file a complain but they were not sounding too helpfull .