The seller is in the USA and used the Global Shipping Program to process your order.
Once the seller has Confirmed Delivery of the purchase to the GSP plant in Kentucky, his responsibility ends. Don't talk to him anymore.
Go to the Resolution Centre up in the top right hand corner of this page under Help& Contact. Choose Item Not As Described. Start the Dispute.
You may be asked to return the incomplete item, but not necessarily. If you are, use a service with Confirmed Delivery.