Luminous Power Technologies — Luminous Nxg 1100

I have bought luminous NXG1100, since 2 months there is problem of overload in it, sometimes it is not charged by solar and sometimes with light, I have complained many times but these people are not giving service,
I am very upset.
Neither the shopkeeper nor the company is providing service, so we should be called consumers.
please take strict action against them..
I want to refund or new products related to it..