Consumer Redressal

Sir, I would like to lodge my complaint in consumer forum against MICROMAX INFORMATICS mobile company. I purchase a mobile being model no A121MMX for Rs. 7432/- on 12-07-2014,but after around 10months it having battery problem, i shown to MICROMAX SERVICE CENTRE, namely M/s. Technique Service (West Bengal) on 21-05-2015 and they said u have to buy battery at Rs. 450/- , i agree they issued me a Job sheet being no 0515-16771148, and said to came after 10 days to receuved the battery., they did'nt call me for my battery, i visit several time to the above service centre, but they are unable ti to solve my problem. Its is not possible to me visit every time i make them call at their Landline no 40071827 but phone is always busy. In this regard i request you to please look at this matter and please take appropriate step, becose every consumer have is right, and that i am looking for. Thank You.