New line unable to receive calls, but can make outbound calls and send/receive text messages

We just added a phone line to our Business account. This is a new (to us) phone number and phone (Samsung S23). The phone is able to make outbound calls, as well as send/receive text messages. However, when you try to dial the new line, it rings for 1 second before a "We're sorry. You have reached a number that has been disconnected or is no longer in service. If you feel you have reached this recording in error..."  I have tried every step of the Verizon troubleshooter and still no luck. I've also tried uninstalling the Verizon One Call dialer app, but I'm only able to "disable" it - even still, issue persists.