Usha — Unsatisfactory service and irresponsibility

I have purchased a new fan and after installed noticed a sound from it . Raised a complaint calling to toll free number and they provided service center number situated in Nellore, Andhra Pradesh
with phone number[protected]. and Named Nivas Electricals . No one responded to the compliant and when I called them they pepole even dont no to how to deal with customer and disconnted the calls only asking the question when will technician will attend the service . Nobody till now attended and 48 hours crossed and i need company to take strong action and should help customers to resolve the issue .