Consumer Redressal

I purchased Mobile(LG D686) on 22.3.14 for 18,200/- from Barmecha Refrigeration Pvt Ltd of E-Mall, 6 C.R. Avenue,Kol-72(Bill-1803).On 23.3 LCD Screen disappears. For sunday visited shop on 24.3. They tried &the set became on. Again same probl- em on 25.3 & I was out of Kolkata for prescheduled programme. After return I went shop on 28.3 They tried but failed & asked me to visit service centre with documents.On 29.3 I went to LG Service Centre Suva Information Technology Pvt Ltd at P-38,Princep st, Kol-72. They observed & told that LCD screen to be changed.I said to change the set. They refused & told that it was possible If I submitted within four days.I returned with deposit receipt No.0143 & complaint at service india @lge.com. They replied that they referred to local office. Being pending I further mailed on 3.4&18.4 still no effect. I am a sr. citizen & purchased for my personal use.I think the set which I could not used for a day should be changed. I want justice from your end.