the person offer mi 70%off on a mobile of samsung and he is giving cash on delivary in 10 days.
should i buy it or not. plz tell. and also told u will get an confirmation call after placing order.

You would get more out of your money if you took it out back, set it on fire and roasted hot dogs over the flames.  That way you would end up with something to eat.  Seriously?  Someone calls you up out of the blue and offers you a great deal and you can't tell that it is a scam?