Eureka Forbes — Urgent service

I am Rajani resident of Hyderabad. My aquaguard unit is not working since last week and we are keep on calling customer service everyday but no one turn up until now. As we don't have any other options to drink water getting outside water due to which my three year old son got sick of diarrhea.
May I know who is responsible for all these?
I am an AMC customer who is paying 5000rs and waiting for service.
Totally fed up with the service.

Finally I have a small request could you please take your unit back and refund the amount so that we go for other options.