Amazon India — Jbl tune tws125

I had ordered jbl earphone costing 5599 from amazon which i received today morning and as i opened the box it was empty i had ordered it on cod and paid it via Amazon pay upi. After seeing the empty box i instantly called customer service for complaint but they clearly Denied that empty box are never delivered in any cirumstances i tried to call again they transferd the call to concern team bt same thing was told by them