Contact Form Spam Prevention - reCAPTCHA is broken, it allows for SPAM

As a favor, I set up a Wordpress site with a typical contact form and used Google's reCAPTCHA to prevent SPAM. I must say that over the course of the last 3 months, I have been getting daily SPAM messages, about 2-3. Which is not bad.  

A typical message that makes it through, is fakes being from top lawyers or insurance companies. 

But it's not enough, Google's reCAPTCHA is simply no effective any longer, and you have implemented another challenge to zero out you SPAM from a site. In the past, say a year ago this was enough, but no longer.