Panasonic — air conditioner

I bought panasonic inverter ac on liquidation sale dated 01/06/2020, when the piece was delivered and opened there was a physical damage on the outer body of the inner unit, yet we agreed to install it when assured that it will be replaced within 3 days. After installing, on 08/06/2020 we did not find any cooling effect. We lodged a complaint to the concerned person whom we got to know about the liquidation sale and he is one of panasonic area manager. Due to the lock down the person told us that he will send the technician to look after the problem after the lock down. The technician came on 29/06/2020 telling that ac was completely defective and the same was informed to the area manager. From then on wards the issue is prolonging till date convincing us for the service of the complete unit, whereas we are demanding replacement of the unit. But the concerned people are insisting us repeatedly for the service of the unit sending different technicians to solve the issue.in our regard we are strongly insisting them to replace the unit, since the problem was escalated within a week. Kindly look into this matter and resolve the issue as early as possible.