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I don't know anything about ancient cities in Mesopotamia, but I remember that the RugbyWA website refused to let me change my email address, even though it was an option. In the end, I had to ring up their memberships officer and have him update it manually. Then I started getting lots of emails from them.
Also, a survey doesn't require answers from the entire membership, just a statistically valid sample of members. They may have sent out the survey requests to a small group of randomly selected people. And I won.