Seeking information Regarding oneplus Sevice centre, Kolkata, Salt lake exclusive service centre

Address Oneplus  Exclusive Service Center – Eternity building, DN-1, sector V, salt lake , sector V, kolkata (WB) 700091 (Landmark – college more HDFC bank)


Has anyone tried this Service center
I am having huge problems with guys from this Service centre

My oneplus mic stopped working
Sent using pick up and drop Service 

No update whatsoever in 10 days
They are diagnosing the phone from past 10 days
No email no update provided what so ever
Even after complaining i am not getting any help
Maybe i have lost my oneplus

Anyone having same problem
Technicians name : Pronab Yadav Kolkata Kolkata salt lake oneplus exclusive service centre
Near moore college

Any thoughts and please comment if your facing same problem