My new S9+ sends certain callers directly to voice mail without ringing or being a notification about a missed call. My Do Not Disturb is NOT on. These contacts are NOT blocked. In fact, they are callers on my priority list of numbers, they are numbers who are Verizon customers and they are lines on my account. One is my husband's number that will not ring through and it is extremely important that I am able to receive these calls.
I was told to turn off HD calling and Wi-Fi calling off, as a possible fix. This did not work and I think this defeats the purpose of upgrading the phone for for better calling features if I am not able to use them.