Lloyd — lloyd ac defective unit

Address:

flat no 410 4th floor c wing narsala nagpur, Nagpur, Maharashtra, 440034

I have purchase the lloyd air conditioner in april 2019 with serial no nah002356b02. I was the rise 2 times complete in your respective area service centre.
This unit not working properly i. E. Not cooling also not working sensor, highly electricity use, last two month my home electric bill around of 34000/- but before ac unit use my home electricity bill was around 1200/- average
Your service engg says we was change the pcb and inner unit sensor but sir i was purchase this unit in april 2019 i mean just 2 month before, sir why your team say change the component?
This is defective unit.in case suppose change the component but not any changes in your product mean cooling, not working sensor also highly use electricity
Then who is the responsible high electricity bill,

I humble request to everyone if possible please change the unit as soon as possible