Godrej — Damaged/stolen of parts during servicing

Purchased an GODREJ Air conditioner on 29.04.2019 from Kholsa Electronics Dunlop Branch. My air conditioner was not working properly, so I registered a Complaint and your technician visited on 05.10.20 but could solve the problem and they said they will visit again next day did not turn up. On 10.10.20 another 2 technician visited & said problem in PCB. My question is how PCB of a new Air conditioner can damaged 3 times in one year? I am also suspecting that faulty PCB was placed in place of my PCB as they were not climbing down from roof after long time. What is benefit of invertor AC then?? I am not accepting this & please arrange to repair my AC at earliest at free of cost.