Amazon India — refund issue of 13480 rs

Address:

New Delhi, Delhi, 110033

Hi
My name is arvinder shah & my mobile no. Is [protected] i recd the 13480 rs from amazon as a refund. They said we issue refund on 31 dec 2018 but still i am not recd in my hdfc bank account. When i call the amazon customer service they said we initiated your refund so please contact your hdfc bank customer care they also gave reference i'd to me. But when i contact my hdfc customer service they said this is reference i'd please provide us transaction i'd. So i totally confuse when i call amazon they said we gave transaction i'd but our hdfc bank said in this id no transaction happen so what i do. Please look my matter i want my money back.
Arvinder shah
[protected]