Consumer Redressal

I bought a tablet from Datawind (UBISLATE 7cz ) in starting of this year (Jan 2014). The charging adapter stopped working suddenly within a month I got it replaced but again it got burnt within 2 weeks. My father was out of station with tab so I was not able to get it replaced. As soon as my father was back in home town I registered complaint about the poor battery backup and adapter. They adviced me to send the tab by courier to gurgaon service center. I send the tab on 7th of July and it was delivered on 9th of July as per courier service records. I waited for a month but no response. I called customer service and was informed to wait for 2 weeks. I called back in a week to check progress but again same reply. Later their executive Mr. Jagjot Singh talked to me after several requests and requested a 2 days time. Later he also stopped giving any response. Customer service is always informing to wait for another 2 weeks. Now its over 5 months but still no response.