Punjab National Bank [PNB] — index

Address:

shastri nagar akbarpur, Ambedkar Nagar, Uttar Pradesh, 224210

I had pay two payment done by upi to the amazon one is transparent back cover of rs 139. And another is digital smart watch of rs 599. i purchased transparent back cover of rs 139. And another is digital smart watch of rs 599 from amazon done full payment by upi but order was cancelled on same day 11.10.19 and other is return on 17.10.19 now amazon is saying that refund has been sent to your bank so contact customer service and file charge dispute. They had given to me reference number[protected] and[protected] respectively but customer service is saying that they can file nothing file charge dispute and can only check if money came to your account or not. Same behavior by branch also.
Now don't know what to do. My a/c no. [protected]