Boult Audio — One of the earphone not working properly

Address:

Exotic Mile, 1st Floor, B-67, Wazirpur Industrial Area, Near Honda Showroom & Royal pepper Banquet, New Delhi-110052

I had purchased Boult audio Z25 earphones on 10th April 2023 from Amazon. Initially, they worked perfectly, and I was impressed with the sound quality. However, in the month of June, I noticed that one of the earphone is no longer functioning properly.
I had written a mail to [protected]@boultaudio.com and through their delivery partner DTDC had returned the earphones. It been more than a month that i have heard anything from their side.
I have written mails to them but no response.
My ticket ID: 00927427