Khosla Electronics — faulty air conditioner on delivery

Address:

Kolkata, West Bengal, 700059

I have purchased Air Conditioner From Khosla Electronics Pvt. Ltd on 06/06/18
which was delivered on 07/06/18 and installed on 09/06/18 but installation was not completed as the outdoor unit did not Gas in it ( as informed by installer ) and again the installer came on 13/06/18 for refill the Gas after he completed his job he left and i left for office . Next day i noticed the AC was not cooling enough but i could not complain as all three phone numbers given on their bill was unreachable. i had no option but to go into store again to complain on 16/06/18 where they promised to get the problem fixed on monday. i had to take a day off from my office to wait for engineer to come and fix my AC, i waited all day but no one came only they came after 9:00 PM. These engineers where from Hitachi brand of which i bought the AC and when i told them the outdoor unit of the did not have GAS the first day they said Khosla Electronics shouldn't have installed the AC as it as brought faulty
I was using a 1 TON AC before in my bedroom which was working fine but i changed it to 1.5 TON AC only that my pet ( Siberian Husky ) can stay peacefully this blazing summer. I have asked Khosla Electronics People to send atleast someone to install my older AC so i can let my pet sleep in AC and i have 4th floor apartment i flat is in top floor during day time it is extremly hot and since 09/06/18 my room is without AC and my pet has also started shedding hairs. i have asked them to send them day time but again they have sent their people at 9 pm it is so harnessing that when i called khosla electronics employee (Parta Roy ) who sold the product to share their manager number he said they cannot give these details to me.