O General — AC of 1.5 T inverter base

I purchased AC of O general a year back but started using from Jan-21 as could not shift to my new house due to COVID -19 . I am a senior citizen.

Since I started using AC, on and off cooling is not sufficient even at 18 degree temperature. Complained several times and attended to but issue is not resolved. Absolutely bad product. Bought expensive machine due to brand equity of O General but very much disappointed.