why dont i c dragons teeth i bought premium i thought it came with it battlefield 4

I had this same issue not just with Dragons Teeth. I purchased BF4 thinking it was "premium" while it was on sale a couple of weeks ago. Now it shows that I only have standard BF4. I wished to purchase the premium edition but don't want to have to pay the full price on top of already buying BF4. When I purchased the game it was 70% off during the sale. What should I do? Any help? Thanks.