We're sorry to hear that! This type of manufacturing error is typically handled by the game's publisher so we recommend that you reach out to them to have replacement pieces shipped to you.
Replacement pieces for games distributed by Asmodee Canada are handled at the point of purchase. If your missing pieces are from a game distributed by Asmodee, please submit a support ticket and we will help resolve the issue.
You can find the full list of Asmodee publishers here.