Amazon India — Non refund of returned product

Address:

Chikkamagaluru, Karnataka, 577132

I would herby bring to ur knowledge taht i had returne d a product bought on amazon shipped by sastideals, new delhi which i returned by speed post as the product was not to my satisfaction. The sasti deals is claiming that they havenot rcievedthe product. Following is my order no
Order date:30/6/16
Order#[protected]
Order total:348.75
Now the company sasti deal claims that it has not recieved the product and speed post people say if not deliverd the product comes retun within a week of despatch. Kondly look into the matter and resolve the issue.