It is a pleasure to welcome you to the Phantom Pilots forum. I hope that you will take advantage of the benefits that come with membership and that you will be able to use the forum for the exchange of innovative ideas and as a resource for current developments in Phantom quadcopter’s.
I have seen other weird SD card slot issues from other P4 owners so you are right, your not alone. If you haven't had it long I would try to return it to BB if not you will need to send it to DJI. Their site has all the details.