Usha — WallFan is not working

We brought new fan on 02/05/2022 and used only 2 hour and I have raised the complaint on 03/05.2022 with complaint number WC[protected] still now no as attained the complaint and we got message from usha service they have assigned the technician and that guy not responding for the phone call and we called toll free number and still issue is same please don't bug usha fan this is my humble request and worst experience I had.