Boat — Warranty claimed earphone pickuped but not returned yet

I purchased an earphone vide order number:[protected] invoice number : sccg-178974
Order date: 28.09.2019 invoice details : wb-sccg[protected]
Invoice date : 29.09.2019 through amazon. After arising issues in earphone warranty was claimed. Item was pickuped by his courier partner xpressbees in march.
A replacement ticket id was generated, no-1037385.
After that i have written many times to the company but yet i there is no reply nor my earphone i have received.