Did you purchase the Black Tie Protection with Accidental Handling? If so return it to BB and they will send it off for a refurbished one in which you should receive in 3-7 business days. If you don't have the ADH plan with best buy you will need to send it to apple or take it to a apple store so they can replace the screen at your expense.
----------ALWAYS check your purchased items for damage before leaving the store. If you never leave the store and check it in front of a employee it removes all doubt that you might have damaged the item.----------