DELL Computer - Cheating done by Reliance digital

I have purchased a Dell PC from Reliance digital Visakhapatnam on April 23rd 2012. The unit was a display piece, the sales executive gave me word stating that unit was only 3 days old taken from the box. So purchased the unit got back to the home. Within 2 days speakers where gone bad. When I contacted the Dell support, they told that unit was 160 days old and in the month of Feb 2012, the computer was repaired and the motherboard along with the power supply were replaced. so Reliance digital cheated me and sold a refurbished computer. When I contacted them for a replacement unit, the answers given to me is that: they have big lawyers with them, even I go for CC I can't do anything.

Please make sure that you never any products from the Reliance. They only sell junk products.