[incompatible]

So it seems that as a buyer, if you receive the wrong item, or the item is delivered to the wrong address, Amazon will do nothing. I'm not sure why the seller went to the trouble of sending to a different address, but didn't bother to bulk up the mass.

[ChuckMcM]

Technically, this also comes under Mail Fraud which is a federal crime[1]. This suggests that our author should contact both the FBI and the postmaster of their town because someone is using the Mail Service to commit their fraud. And as the latest rounds of advertisments from the Post Office state, "When you use the mail to do your business, it becomes our business."

[1] https://en.wikipedia.org/wiki/Mail_and_wire_fraud