Consumer Redressal

i submitted my phone karbonn A7+ in the authorised service center(Ujjawal Telecom) in dehradun on 19/09/2013, the phone has some issues in the headphone jack. they tell me that the phone is sent to delhi for necessary repairs and come after 25 to 30 days but till now i do not recieved my phone. i already sent a mail to support but they do not do anything in this matter. my mobile details are: IMEI/ESN 1 :911211850754434 IMEI/ESN 2 :911211850754442 JOBSHEET NO. :KJASPUT024913K3974 MODEL : A7+ CONTACT: ROHIT SINGH MOB. NO. : 8439883210, 9410134720