Consumer Redressal

My Karbonn mobile ( Titanium S99 Black , dual sim , IMEI No.911345304461400 , 911345304461418)purchased on 16/10/2014 developed a problem and I have deposited the same on 14/02/2015 at authorized Karbonn service center (Techno Care ,150, B. Jodhpur Garden, Kolkata, Kolkata - 700045, West Bangal, Service Center Support Number : 9836524834 , 03340067824 , 03324220440 ) for rectification of the problem (Job sheet No. KJASPWB030215K2590). Till date they are harassing me by saying that my handset will be delivered within 10 days , though the original scheduled date of delivery of the handset was on 16/10/2014.