Micromax Canvas Nitro A311 — My mobile give to micromax care for repair

Address:	New Delhi, Delhi, 110027
Website:	Micromax.com

My mobile micromax a311 is have purchesing on 25/may/2015 i am using only 2 months and mobile start so much problems like hanging wifi is not working etc. I am submited my mobile on micromax care on 23/aug/2015 and recive my mobile after 2 days i'll check but mobile was not working properly than i agin submet on 27/aug/2015 and still today is 21/oct/2015 my mobile not give me.i well call agian and again but executives say after 15 days you will racive your mobile but next 15 days i call agian the answer will same. Please tell me where I complete. Micromax is service.my job sheet number is (*N[protected]*)