Hero Electric — Hero optima bike

Address:

IIT Madras

Hero Optima (Red)
I purchased a Hero Optima 2020, On that day onwards i am getting the full charge, day by day it get louder and irritating, I repeatedly telling to the not working and they simply check battery full and delivering the bike and next it started the not working, I have telling repeatedly for one year, its not working, they telling as every hero optima model has the same problem, so kindly im requesting you to take action immediately