Xiaomi India — Mi4i power button not working and ineffectivity of xiaomi service centre workers

Address:

Lucknow, Uttar Pradesh, 226016

Sir/ ma'am,
My name is Sushila Parihar from Lucknow, India i want to complain against the ineffectiveness of workers of xiaomi service centre and not working of the powerbutton of my phone on 21 dec by mistake my mi4i was locked by my son and inspite of several tries we could not unlock the phone . So i took the issue to xiaomi service centre, they formatted the phone and installed new R.O.M but within 10 days, the power button of the phone stopped working .When i took this issue to xiaomi service centre they did nothing and showed no response . Therefore i request you to take this matter in consideration and take effective steps in solving my problem