Not receiving calls

New iPhone 15 Able to receive calls from everyone except my wife. FaceTime audio and video calls come in from her. When she calls she can see that it’s ringing but no connection on my phone. She can leave a voicemail. We spent 2 hours with Verizon Tech support with no resolution. Tried restarting, toggling on and off airplane mode. Checked for blocked calls etc. Nothing works.