Xiaomi India — Mi in ear pro hd earphones

Address:

560064

Mi in ear pro hd earphones (₹ 1999/-) have poor sound quality compared to the cheaper mi earphones (₹ 999/-).
We have tried to return it or ask for replacement (Within 10 days of purchase, as per mi policy). But we have got no response from them regarding this.

I went to the mi authorized service centre. But the service centre people tell us to speak on the hotline number and the person behind the hotline number tells us to speak to the service centre. And this goes on.