Send it back, that board is damaged and you should not have to deal with someone else's mistake. That happens when the edge is impacted directly from the side, probably happened during shipping or by poor board handling at the shop.
If you wait until after you have ridden the board then the damage will be written off as impact damage due to rider error. That is very common damage and IS NOT covered by manufacturers warranties by any company I have dealt with.
If the shop you bought it from refuses to exchange the board then take it to a reputable shop in your area to get the edge reset and epoxied. If you ride the board in that condition water will eventually work it's way inside the core and rip your new board apart through swelling and freezing.