Package Stuck in China

On Feb 14th I placed an international order with a vender in China; one that I have purchased numerous items from over the past two years. Now typically I ship via UPS but thought I was being smart by saving $20 and shipping with FedEx. That was wrong. The item was shipped from the vender next day, only to still be sitting at customs 11 days (and counting) later. I've called FedEx's international department every day they have been open for the past week only to receive the same "we will reach out to that location and get back to you with an update". They have yet to get back to me and even when I call there is no update. When I asked to speak to a manager yesterday, the individual was rude and even talked over me on multiple occasions. When I asked to speak to her manager, I was told she was the highest person in the organization and abruptly ended the call. Highly disappointed in the level of customer service and care received during this package frustration. I never intend to ship international via FedEx again.