Amazon India — Hard Drive

I have ordered a 1 TB HD from Amazon as a COD. When the HD came, I have informed the courier boy that the Hard drive seems to be too light, I think the package is empty. Since it was a COD I paid, however opened the packed immediately with a video.
It only have a case with no HD. within minutes, I contacted Chat support. They said, wait for 3 days for payment settlement, I contacted them again after 3 days and they said investigation to be raised. No one contacted me or asked for evidence. after November 2 2023, when i contacted them they said refund not possible.