LG Electronics — No action taken on defective lg g4

Address:

Varanasi, Uttar Pradesh, 221005

Dear sir
Today I received lg g4 after repair from service centre. I enclosed in my mail 3 videos that will speak how its working. Although after 8-9 attempts the set booted but its shutting down at times. The screen also showing lines at times. Wifi connecting at times...but agaun starts blinking.
I stronly object for such service from a company like lg. Sir, please immediately replace my phone or allow me to go for some other model, if required, by paying difference amount.
Hope you will do the needful.
Regards
Nitish