Digging is Done, When Does Internet Arrive?

Hi everyone.  My mom lives in a very rural area that's never had access to regular Internet service, however last year, AT&T was burying fiber line for what was said to be their Internet service.  No one's heard anything.  Is there anyone that can be called to see WHEN the Internet might be available in her area?  No one she's tried calling really seems to understand the question.