Notice how they all have that grayish dark toning around the edges and the devices? That is a huge clue that these "coins" have Chinese origins.
The counterfeiters use this faked toning to make you think the coins are just toned from the aging process.
If you cannot get a refund just chalk it up as "tuition" in getting your "degree" in numismatics. You'll be much more cautious next go around.
Sorry you got taken.