Hello! This is my frist post even tho I've been checking out this forum for a long time. I finally decide to purchase my first Chanel bag from Saks Fifth Ave. I got classic flap jumbo black washed cavier, and it arrived today! But my problem is it came without any care cards nor authenticity card. Should I return it? I've never bought anything over the phone so I didn't know what do to! HELP! Thank you so much!