As Eddyisgreat said, we need more information.
Is it Logic Board, Motherboard (such as Wi-Fi, Speaker, Processor, RAM, etc), Trackpad, Keyboard, or dead pixel?
All these problems will be solved if is still in 14 days (as Eddyisgreat mentioned), and if it's not, then it depends on the person you meet. Store Manager would likely to help, but if it was sum sales man, then not most likely.