- contact the sellers to see if you can settle the matter with them directly. Normally, they should agree to send you another parcel or refund you unless the orders were seized by customs.
- file a complaint to the post office.
- if the sellers refuse to reship or refund and the problem has nothing to do with customs, then contact the credit card company (look for their fax number for complaints on your monthly bill) and fax them a letter explaining the situation as well as copies of email receipts confirming the orders, emails you sent to the sellers to settle the matter and possible answers. The credit card company should give you a temporary refund which will be confirmed after they mailed the sellers.
