Aren’t you breaking the law?
Contacts DB purchase is prohibited by the individual information protection law which is very strict in Korea and Japan. So acquiring contacts DB process is contacting all relevant organizations to their receptions and do the profiling only via outbound call or email tactics.
This may give you a hint about why you need to check your partners, competitors and re-sellers’ keyword strategies. And redirecting the traffic simply to your home page or a landing page which is not relevant to the keyword is not recommended unless it is about the topics the traffic intended to follow.