Nokia India — nokia care rep complaint

Hi team I own a nokia lumia630and i am facing problems with it. i went to nokia care numerous times and they were unable to help me.yesteday i went to the nokia care at barrackpore kolkata and i had the worst experience in my life. the lady rep was rude and did not listen to my issue and started saying that we will not be able to help you. i am faing network issue with this phone and i have compared with othee nokia630 devices with same service provider. i even tried to exchange the sin cards and found that the ixsue is with my set. please let me know if i can get help at mokia or do i have to go through consumer fourm. i expect an answer please reply.