Sony India — Headset outgoing call issue

Address:

194,Ganga Enclave,, Sec 13-17

I had purchased Sony WH1000XM4 recently.
The quality of outgoing calls is very poor. I had already got headset replaced which took almost 1 month.Now again new headset have same issue and submitted to service center but now they are denying with the fact that there is any issue in headset.
Issue is already escalated under Sony headdesk and it's request Id:[protected].

But all is futile .No one is responding.
It wasted so much of my time and energy.