not giving what was promised a case of cheating

Location/place: kolkata

Name of company/service: hul

I HAVE BOUGHT A PUREIT ADVANCED MODEL WHERE I WAS PROMISED THAT I WILL GET 1500 LTS OF PURE WATER I RECEIVED ONLY400 LTS OF PURE WATER AFTER WHICH IT STOPPED WORKING.THAN I COMPLAINED TO THE COMPANY BY WHICH THEY REPLACED THE GERMKILL BATTERY KIT WHICH ONLY LASTED 20 DAYS GIVING ONLY 150 LTS OF PURE WATER AFTER WHICH IT STOPPED WORKING.I HAVE COMPLAINED AGAIN BY WHICH THE COMPANY EXECUTIVE SAYING THAT I HAVE TO BUY A NEW 1 THEW WILL NOT REPLACE IT.MY PRODUCT IS STILL UNDER WARRANTY AND I HAVE ONLY RECEIVED 500 APPROS LTS OF PURE WATER.IT WOULD BE OF GREAT HELP IF YOU CAN SOLVE MY PROBLEM. my name is siddharth pugalia and my no is 9830671183.