Hitachi Home & Life Solutions India [Hhli] — resolve my problem for the new ac (suffering for more than a year)

Before i start please refer to this complaint which i filed
On 2nd april 2019 - https://www.consumercomplaints.inhitachi-home-life-solutions-india-hhli-totally-frustrated-will-not-recommend-this-brand...⇄ it was a huge dissatisfaction for me but the day i filed this the same day i got call from senior authorities - hitachi and within 2-3 days my request was closed positively. I faced a new problem that was water dripping from indoor unit. The problem started in september 1st week. I filed complain on hitachi mobile app. I registered complain 4 times and they visited 8 times approx.in a month time. But the problem never got resolved. Everytime technician visited they said problem is resolved now. But water starts dripping after 1-3 hours max. After they leave. I last registered complain in 1st week of october but the problem remains same. I was out of station for some weeks and after that when i returned i also forget to register complain as i didn't used ac due to season change. This year after technician visited for ac servicing he said that coil needs to be changed as it is not working and there is no gas in ac. I contacted service center but the manager said that part are not available and they will get back to me once they will receive required parts. Then this lockdown started due to covid and all operations remained closed. I was in touch with the manager and called him to know if they are operational or not (After new announcements made by govt. During this period). I discussed with him on last monday 18th may. He said he will receive part by thursday and will send senior technician by friday. I called him on thursday evening and he confirmed that he have received the part but he will not be able to send the technician on friday due to man-power shortage. He asked me to call on friday for an update but since then he is not picking. I also tried calling on office number but no one picked.
My wife is expecting and is in her 6th month of pregnancy. Temperature has now reached 42 degree and will increase by days. I have told all this to manager and asked him on humanity ground to solve my problem on urgent basis. But no response. I would like you guys to resolve the issue on immediate basis from which i am suffering since more than 1 year.
I am in urgent need and helpless as i could not contact anyone. Neither the service center is responding neither on toll-free number i am getting any response. I have attached image of complain request done by me in past time.
Kindly consider and support.