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Copper Rule
(i.imgur.com)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
You know, isn't it possible the complaints were only a few from people that were quite picky. Could he not have had many happy customers and just kept the complaints because it was funny? Is there a reason people just assume he definitely scammed people all the time?
They found and translated a bunch of tablets of letters to him that were found all together. As I remember, there were several complaints about the quality of the copper and they decided the building they were found in must have been his workshop. It's possible he has happy customers who just didn't write him letters.
The internet has shown that there will always be someone complaining.