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Talk on how to game the system is not allowed here. If it's legitimate, it shouldn't be disputed. If you try and fail, you'll never be able to dispute it again, even if a true error pops up.
Your best bet is start sending GW letters and ask for deletion. Disputing an accurate listing is a waste of time. It will always come back as accurate. Start looking for administrative addresses and e-mails and start sending them out. Here s a great thread that explians the procedure. Good Luck!