Diakin — AC stopped working, incorrect diagnosis, poor consumer support, unavailability of parts

Complaint registered on 7th July
Your website is pathetically designed, service request providers state of service is not mentioned which creates a lot of confusion.

10th July (after 3days your service person comes for service)
He diagnosed the issue with inner unit PCB. Said it will come within a day.
I keep following for delivery, took 4 days to deliver a part from ghaziabad to Delhi.

14th July the part arrived along with another serviceman, he said the issue is with outer unit PCB.
I keep following up with "Unique Cool Point " (the allotted service provider) everyday! They're unprofessional, confused and lack information. It has been 10days and no one knows if the part has even been shipped or is available at the warehouse. If it's not available, I should be informed so and then given an estimated date of repair. Why is the onus on the customer to first be annoyed with a bad product, then struggle with pathetic websites and customer care number and then keep waiting and following up without a ray of hope!

Your customer care keep directing me to the branch office number that no one picks up. Then they say I'll get a call back which I never do. Does the responsibility of the company end post sale??

I regret my decision as a consumer of buying Diakin. Voltas or Lloyd both have such fast resolution process, why Diakin is failing to do so is beyond me.

Pls ensure parts availability with an estimated date, else buy back your product from me at the cost bought. I do not want any association as a consumer with Diakin. It's frustrating.