Micromax — complaint against micromax A106 Unite 2 having problem reported as 4103 POWER SWITCHES OFF again and again after repaired from service centre

I would like to inform you that I had purchase Micromax company mobile A106 Unite2 in the month of 18th October 2014 and I am not satisfied with the working of the mobile there was a problem with the power button so i gave my phone to the authorised service centre of micromax and they reported as the " 4103 POWER SWITCHES OFF" and i received my mobile after two weeks and it was functioning normally only for 2 weeks, it is giving me the same problem that i had previously that is power switch off. so i gave my mobile again to the service centre for repair, the service centre people told me that the mobile has board complaint and they had sent my mobile to Delhi for repair. they told that after 20 days the mobile will be returned after repair . i gave my mobile for repair on 21/3/2015. after i again visited the service centre on 13/4/2015 and they told that the a new mobile will be replaced after 1 week . again on 17/4/2015 i visited the service centre, now they are telling that the reported problem is under pending . i should get my mobile replaced since it showing repeated complaints and the mobile is under warranty period .Therefore i request you to look on to the matter or else i will bound to take the legal action earliest . the job sheet number is : S[protected] & IMEI : [protected] &ESN: [protected] .KINDLY PLEASE LOOK INTO THE MATTER AND PLEASE REPLACE A NEW MOBILE because the phone is showing repeated same complaint. the mobile is under warranty period.