Your order was fulfilled by Amazon, therefore all shipping related issues are handled by Amazon, and we do not have access to your shipping method or tracking information.  If you were charged for shipping, it is possible you chose something other than the "Free Economy" shipping option during checkout.  We suggest cancelling your order and placing a new one, making sure to choose the free shipping option prior to checkout.  Below are some useful links:

Amazon Customer Service

Amazon Shipping and Delivery