TTK Prestige — No service

Address:

Chennai, Tamil Nadu

I have Got GT 02 Glass top LPG stove, the glass has been broken while cooking, when the same was informed to the Service center they have given me a complent number (2925) and assured that the same will be replaced in 2 days time, 8 days have passed but the same is not being attended.
when called they gave the service technician number, and the technician says he will not attend the call as the service center has not informed him.
when called the service center they say talk to the manager and the manager is not reciving the calls.

Dont know what to do to get the glass changed as without glass the stove is useless.

Regards,
Prafulla