ZTE Corporation — Authorized center not accepting my phone which is in warranty.

Address:	110064
Website:	Zte

My zte mts rockstar cdma phone is not working there us some problem of failure in board and subjected to replace . the service center attendant refuse to accept my set as he told me to registered the mts connection no.(mobile no) to submit the same . but i m using tata sim in the said set which is purchased from online shopping snapdeal as shown compatible with tata cdma sim which is working properly in the mobile set ... But now service center attendent in uttam nagar new delhi named as om communication refused to accept my set to repair without the mts connection .. Nothing is mention while purchasing the set in the website or mobile packing that the mobile set is only meant for the mts sim only . my hand set us in warranty n i want my set replaced ir repaired ... Two times earlier the same set was repaired in janak puri service centre district center vishwdeep building they don't ask me mts number . then why uttam nagar dealer ask me for mts number kindly replace or repair my handset as janak puri center was closed and this is the only center i have in my location..