# File lib/campaign_monitor.rb, line 271
    def unsubscribed(date)
      response = @cm_client.Subscribers_GetUnsubscribed('ListID' => @id, 'Date' => date.strftime("%Y-%m-%d %H:%M:%S"))
      unless response["Code"].to_i != 0 
        response["Subscriber"].collect{|s| Subscriber.new(s["EmailAddress"], s["Name"], s["Date"])}
      else
        raise response["Code"] + " - " + response["Message"]
      end
    end