Hitachi Home & Life Solutions India [Hhli] — 1.5 ton split dual inverter AC

This is regarding SPLIT DUAL INVERTER 1.5 tonne AC purchased by me on 1st June 2019. I purchased this AC with 3 years warranty under BSES scheme in which below 5star rating AC is replaced by 5 star rating AC at price list agreed between Companies/dealers and BSES. Under that scheme there were 2 prices for same AC, one with 1year warranty and another with 3 years warranty. I opted for the higher price of AC which was coming with 3years warranty. Also i have been told by customer care executive that the warranty for PCB controller is 5 years. I am attaching a copy of my AC bill where it is clearly mentioned '3 year manufacturer warranty'.
Recently, I have placed a request for servicing on 16th april 2022 with Req No:[protected] with my registered Mobile No. On this request no one contacted and reached my home for servicing. On 11th may 2022 i got a message that my request is being cancelled due to 'Customer Not Contactable'.
Again i placed a complaint on 13th june 2022 with request No: [protected]. Technician visited finally but they are charging me with visiting charges and Gas refilling charges. Although it is very clear that it's PCB connector has got damaged. I showed my AC to my known person who is in such maintenance work only, as per him it's PCB connector needs to be replaced. Technician want to make money by charging me with gas refilling charges which is of no use. That guy was so rude and misbehaved with me.
Further i am denying the charges to pay because if hitachi technicians would have visited in april itself i would not have to bear these charges as my 3yrs warranty was applicable till 1/06/2022, but no one visited on my earlier request.
I would like to mention here that once already it's PCB has been replaced in may 2020. Such a pathetic quality by such a big brand name Hitachi. They are just charging for extended warranty but not providing complaints resolution. Really disheartened with the quality and after sales services. I want its PCB connector to be replaced as soon as possible.
Kindly Look into the matter and escalate my issue.