Liebherr Appliances India Private Limited - Product quality is very bad

Hi,
I brought the double door liebherr fridge on **/*/**** at vasanth and co. But within one year the fridge is not working properly especially not cooling. We register complaint on **/**/**** to resolve the problem. The engineer came done some amendment it work for * days after same problem occurring. So last time they gave assurance that fridge cooling will be good otherwise we will make the replacement. But now the same problem is occured we register complaint but not responding properly. Because this I cant to save any thing in fridge especially milk and idly batter I having * kids below * years. This causing problem very badly. Kindly do the needful .