Sargam Electronics — Not providing service for extending warranty

Address:

Lajpat nagar

I had purchased a voltas ac on 16/06/2019 with extended warranty of 3 years from SARGAM for which I paid Rs 5000 to SARGAM Electronics Lajpatnagar.
But now this AC is not cooling and when I try to call to customer care nobody pick the call like
I have called[protected] but if I select the option to talk to the person, there is no response. It seems that this is the fake company as no contact number are working. I have also send the mails on [protected]@sargam.in, [protected]@sargam.in, [protected]@sargaminsurance.in but there is no response.

Product Details:
WAC VOLTAS 185 LZH
Invoice No: LAJ2-19-861