Tata Motors — Harrier - DL 11 CC 0744 - unable to source cap of left rear view mirror

I am the proud owner of a Harrier (DL 11 CC 0744) which i bought from Tata Motors (Rohini from Malwa Motors) in June 2020.

2 months back (i.e. in March 2022) someone hit my Tata Harrier from the side and the cap on top of the left rear view mirror came off. Please note that the entire system is in place, but only top cover of the rear view is now missing.

I have been trying to connect to various Tata service stations and i am unable to find the replacement cover.
Tata Treo in Oakhla gave me the phone number of the service parts guy (OM Parts) but even the official service parts representative is unable to source the cover.

The picture of my Tata Harrier is attached.

I request you to please help me source the cover of the left rear view mirror. Without this car, the car is giving me an eye sore because of its looks.