I'm not certain how one would gain sufficient attention/interest to cause an effective response, but IIRC (and IANAL) such contests typically have rather strict laws to follow; the foremost but not sole reason being, to avoid being categorized as gambling. Another being to avoid being used or misused as a mechanism to distribute payments to favored parties (one reason for the ubiquitous disclaimers that employees of company XYZ are ineligible to participate).
If they are not adhering to the rules that define their contest, they may be at risk of some significant criminal infractions.
If they are not adhering to the rules that define their contest, they may be at risk of some significant criminal infractions.