they never leave a message.

it's Correctional Area Transit (CAT). They provide daily bus service to Illinois prison / correctional facilities. Pick up locations in major Illinois cities such as Chicago, East St. Louis, and Rockford areas. They can be reached at

statevillerides@gmail.com
http://ridedacat.blogspot.com
twitter.com/ridedacat

not sure what the Facebook link is but hope that helps!