Hitachi — Non repair of air conditioner

Website:

www.hitachiaircon.com/in/escalation-level-two

I registered a complaint at the start of June that the AC was not cooling
After a couple of visits, the technician concluded that the copper cooling coils needed to be replaced. This was on June 11

Since then i have been emailing and calling up with no action

There is no response to emails and the only response i get on phone is it will be repaired once the part is received

I have tried to escalate on their website. But it does not allow escalation without a Unique Reference Number which has not been shared with me.

All i have is the following complaint number [protected].

Am at my wits end. please help