Has anyone used this domestically? I accidentally paid for express mail using PayPal. The postal worker picked up my package, however it had a guaranteed delivery date of today. The package wasn't even left Ga yet! Supposedly they are supposed to have a money back guarantee, anyone know how to get this when it was a scheduled pick up? I paid $43 to ship the package from Atlanta to Fl. I think they should give me a refund. Help?