Homeshop18 — micromax canvas network and net problem

Address:

Lucknow, Uttar Pradesh

showing no network in phone. net is not working properly one sim zack is not working...i want to replace this defective phone with the new one. the bill details are below- Invoice No. TARA/15-16/122935 Inv Date 09/06/2015 order no.[protected] order date 09/06/2015 Sub order no.[protected] Complaint already registered by phone