Hello TomParker,
If this was an order placed through Paizo.com we can assist in replacing the item. Could you please send an email to Customer.Service@Paizo.com specifying the miniature that needs to be replaced and provide pictures of the damage to the miniature for quality control purposes? An order number for the original order the broken miniature was in would also be of help. Once we have a picture we can set up a replacement for the broken miniature. Thank you!