Deccan Chronicle — Amazon dint send me the refund

Address:

Hyderabad, Andhra Pradesh, 500028

Respected Sir,
I purchased a product from Amazon but i dint need it so i have return it back and then i have asked for the return they are saying they have send me the amount in my bank account and when i asked them for the reference number they are not providing the reference number also its been more then 10 days they just making me call them chat with them but they are not resolving the issue, i can also show my bank account details if i have received the amount from amazon.
amazon id: syed.[protected]@yahoo.com
ORDER #[protected]

Regards
Imran