Declined calls on Apple Watch not going to voicemail
I've recently been having an issue where phone calls that I decline on my Apple Watch Ultra do not go to my voicemail: instead, the caller gets multiple rings, then a message that the call could not be completed as dialed. I updated the watch to the latest WatchOS 10.1, but am still getting the same. Declining calls on my iPhone still sends the call to voicemail as expected.
I just got a new iPhone 15 Pro Max, but this issue may have been happening before that; I can't be sure.
Can someone help?