Consumer Redressal

hello sir i purchased a karbonn mobile phone in march 2014 i am using phone in six month and then phone fault i am going to your service station he will say one month time in phone repairing i will ok i handed to phone your service station in 9 sep 2014 i m paying u 14500 rs there is no backend phone form ur side u will refund my money back or new phone i am facing problem form 2 month my phone is not repair u will not my money back or new phone i will case ur company my phone imei no is 911350500011223 my phone no is 9858340109 pls replay