Kenstar Slimline Cooler — KENSTAR COOLER NOT WORKING SINCE 3 MONTHS

I purchased a KENSTAR SLIMLINE COOLER(Model No : SD-0434 ; Serial No : B9A-00730), purchased on 15th April 2009 is not working since May 2009, just 1 month after the purchase
I've tried complaining to the dealer as well as the service centre around 6 times but no one comes
They gave me 6 complaint Nos(JAI[protected], JAI[protected],JAI[protected],JAI[protected],JAI[protected],JAI[protected])

Help Me Out Plzzz....