Pigeon — bottom broken aluminium induction pressure cooker

I have bought an aluminium pressure induction cooker on dated 4/11/17 through amazon invoice no. Bom3_4065983. But the products induction bottom melted and not heating properly. I talked four times ondated19/07/18 to till date topigeon customer care services and got registerd complaint but get not any solutions. Today i called again to ur customer care services, replied that cooker has no warranty, in spite of 5 yrs warranty. I have fed up from ur service (Worst service and product)