Defective LG AC sold by Reliance Digital, Asansol

I have purchased a LG Air Conditioner (AC) Model: KS-Q18PNXD, EAN#: 8806098399734 8415, from Reliance Digital, Galaxy Mall, Asansol, West Bengal. The AC was delivered to me on 04-04-209 and was installed on 06-04- 2019. They tested the AC and it was working. From very next day, 07-04-2019, the AC was not cooling anymore. The AC was running through a separate power line from the mains. Although, my locality is bit low in voltage but it still has enough power to run an AC. To be on safe side, I ordered a low voltage stabilizer from V-Guard, Model: VEW 400 plus having capacity to stabilize from 90V to 300V. It was delivered to me on 17-04-2019. Regrettably, even with this device, the AC failed to function. I was very much depressed. I called LG Care No: 18001809999 on18-04-2019. LG Care registered my complain vide No. RNP190418092901 at around 09:05 AM. The service engineer visited to my place at 01:45 PM. He reported that there was no GAS (Refrigerant) in the AC. He asked me for my permission to do the repairing work. I denied because, how could a new AC come without GAS? So, I requested him to arrange for replacement of the AC. He said that I have to call Reliance or LG Care for replacement of the AC. Likewise, I called Reliance Digital on 0341-2230082 as well as LG Care once again. LG care representative gave me some contact numbers of LG Service Centre. I called all the numbers. None of the calls were received. At around 06:22 PM, I got a call from 8670876912 from LG Service Centre and I was told that there is no scope of replacement as the AC was installed by Reliance and not by LG. Now, I am totally disturbed and depressed after spending such huge amount as well as time on this AC. In between two corporate policy, a mediocre person is being victimized. I would humbly request both the corporate to look into the matter seriously and arrange for replacement of the AC immediately in lieu of the aforementioned fact. more