Luminous Power Technologies — behaviour of kanpur service center

I had made a complaint 3 days go to visit an engineer because my inverter is not working, then got a call from technician and said component of your product is till 24 th then after i called to customer support they said complaint is closed and gave the number of kanpur service center's head. I call him and he spoke to me so rudely, said when ever component will be available then you will get service i want request to luminous that such type of people are not good for luminous company it leaves bad impact