Hello, @Sfraser! We're really sorry to hear about that. We'd like to look into it to see what's going on. Please provide us the cross streets and zip codes from your current location. You can provide us this info via a private message. Thanks.
Jeffc -- I'm having the same problem. I just activated my iphone se and all of my calls are going directly to voicemail. Mute is not on; do not disturb is not on; I've reset the phone to factory settings...but I see that with Call forwarding there is a spinning wheel but I don't know if that has anything to do with the calls going to voicemail when I have never used call forwarding before. Help!
Follow these steps:
Settings > Cellular > Cellular Data Options > Voice & Data > LTE, VoLTE Off
After that, restart your phone. If you're still experiencing issues, please let us know.