Response from LEGO SHOP
2 January 2020
Emily, Customer Service
Oh no! It’s very rare for a LEGO® set to be missing pieces. Usually you’ll find them stuck in the packaging, used in place of a similar piece, or hiding somewhere near your building area.
If you’ve checked all over and the parts haven't appeared, don’t worry! It’s super easy to request a replacement. Just go to LEGO.com/BricksPieces to get started.