Voltas — Split Ac ads 185v

I bought a slp it ac on 27 may 2020 and installed on 30 may 2020. After one hour it became faulty. Technician visited 4 times. The new ac need to be part change i can not bear this please provide me replacement of my product don't feel me like i have bought a wrong brand. Please make in one week i have already passed a week without working of my so called new ac.