That's bad packing from this seller, all he had to do take pedals off, push the saddle/seatpost down the frame tube, turn the handlebars round to same angle of frame, take bar ends off, wrap it up with bubble wrap and get a box from Halfords, finally mark it 'FRAGILE' on box.
If there any damage on it, you need to take photo's and show it to seller and hopefully he will be reasonable to cover the damage.