Hi,

There wasn't much specifics beyond PR, is this about providing better customer relations?

If you're looking for a chat kind-of platform this one is free and you can host it yourself:
https://chaskiq.io/
It's marketed as "Conversational pipelines for Sales, Support and Marketing"

There is also https://www.chatwoot.com/ which is also free but not as feature-rich but I did try it as well

There's also https://www.mautic.org/ which is marketing automation.

I hope that helps, if you want to get any of those setup and running on your own server or cloud servers, and under your own domain. If you need further help or advice, or help setting this up, please contact me as it's something I have experience with.