Consumer Redressal

i bought samsung starpro S7262. to give gift to my frnd. i bought that mobile on 4th of August from alfa at vile parle and gave it to my frnd on 10th of AUGUST.When we open that box and insert the sim card it snot detecting the network. its a majar issue and battery is not getting charge. Not even for miniuts we use that phone and when we visited marol samsung hub, they bugger first keep that phone for 3 days and after that they were telling ki we will not replace it and want more 8 days to know the issue. Just help me with it.what ever mayb.