That only happen when the sender did not chose qualify company or just send you via Chinese post office system, which would fall in to this trouble.
Next time, use DHL/FedEx, if you got like 10 or 15 poker package, they ship faster and cheaper. And most important it is , they are customer broker that could do the declare process for you.
One more thing, if you can not process those within 15 days upon the arrived date, it would subject to "holding fee" that add up very quickly.