What is up with the national driver registry? Has anyone had experience with this organization?

I’m on their list because I sped too much, and I’m trying to fix my mistakes but they don’t answer the phone or email. I’m going to send a notarized letter to them, but there are also two separate addresses. I’m just going to take the chance of having my identity stolen and send two letters to both addresses.

I just don’t understand why they wouldn’t answer the phone or email if they are a legitimate business or branch of the government.