Be helpful.

Seriously, go find where those consultants and service professionals are hanging out (Clarity.fm, LinkedIn, their own blogs, their Twitter/Facebook pages, forums, MosaicHub) and help them. Consultants have questions about whatever you're pitching.

Start be delivering exceptional value. Their natural intrigue will lead them to your product.

I'm happy to help with a more detailed plan if we can discuss who you are trying to target. At first blush, it appears your audience does not exist or you are not hunting hard enough. :)

-Shaun