Orient Electric India — Noise

I purchase a fan in feb'22, still there is a noise inspite of changing the bearing by company technician. No one is listening now . Company complaint manager (mob no. [protected]) cancelled our 2nd complaint lying that our technician visited and found no noise, than i sent him it's audio of noise, he admitted the noise. Noise is still there but no one is giving ear to me. It is a case of mental harrasment which i am bearing for the last 2 months.
This is regretful to write that this is not expected from company like orient.