IFB — Microwave Oven

Thank IFB as technician change the front door of my Microwave oven and handed over to me probably on 09 Sep 15 after a one and half month waiting. It costs Rs 1600. But just after two days it becomes again unserviceable.and again I registered a complain to IFB. My complaint ni was 16414548 dated 13 Sep 15, but till date no technician visited me. I request you to serviceable my machine or replace it by exchange offer, because it becomes a permanent headache in my family. Frequently i am spending money for this machine but not getting any out put.