UniverCell — defective phone and wrong information

I bought a Samsung mobile from Univercell Anna nagar, chennai paying Rs.7900. The sales person convinced me saying that it is a wonderful phone having all the features, video recording, voice recording, flash light etc etc...but i found that the signal reception of the mobile was very poor, the other person on the phone will ask you to repeat 20 times before you could understand, and voice is so distorted. You can record video only for 23 seconds, and voice for about a minute. It is a very pathetic phone where you cannot read/open sms having smileys (emoticons). I went back to the store saying i was cheated, they said they can take the mobile for exchange, and they can give Rs.1500 for the mobile (hardly 2 months since i bought my mobile).
Univercell is a big cheat...Beware...