Question
We are a B2B Marketing Services agency. We also have extremely happy clients (directors / managers of marketing) that are happy to provide a raving testimonial, but as soon as we finish a project -- they're pretty done with us. Out of sight, out of mind.
When we ask "Could you connect me with a few people I should talk to?" we get the typical response of "let me think about who" and then you never hear back from them.
To combat this - we've tried to share our ICP or even go through their Linkedin to ask for a specific person. No response.
I believe it happens this way since marketers are focused on one campaign at a time and when our services (badass animated video for sales and marketing) aren't needed - we're not a priority (we don't do retainer business; that's another story)).
Often, these people come back for repeat business in 6-12 months. As soon as they need another video, we're friends again and communication with us is a high priority.
We have a monthly marketing email to TRY to help keep us top of mind with these folks.
Answer
Have you considered asking them to create a video testimonial for you that you can then share on your social media sites, thereby giving them more exposure (including for their company and for themselves personally)?
One of my clients also provided very nice thank you presents to referral partners (i.e. gift cards to Nordstrom). That really kept referrals coming!