Kenstar — water geyser element problem

Address:

Lucknow, Uttar Pradesh, 226020

I have online purchase from amazon in the month of november 2017. But element is burn with in eight month. I have not possess the bill due to warranty card but service center refuse the change the element due to non available the bill. The service centre personal visit to my house and demand for the 1400 rupees for non availability of bill. I presented the warranty card and also serial number of the product code, model no. And date of purchase but he demanded only bill which i not possessed.