Howdy!
Thanks for reaching out, and sorry for the trouble! Unfortunately, we're not partnered with Hotfrog, so we aren't able to force them to share this information with us.
We've checked Hotfrog's API, but if they're not showing that listing information to us, then there's no way for us to display the information within your Moz Local listing. So, the best thing I could recommend would be to contact Hotfrog directly, and ask them to make sure that the listing is fully visible to Moz 