All of the above stories are why you have to have a lot of pictures and videos of the product before it is packed "proving" it works, then pictures of the packing materials, pictures while packing, pictures of the final packed boxes...just in case there is a problem and you have to prove that you did everything by the book...and even then, there are no guarantees that you will be made whole.
And, more than likely, you will have to produce a purchase receipt proving you actually own the product...you can't be too careful.

