Iphone 12 Pro Issue not ringing for known contacts
I have begun having a weird problem. When someone calls me I get three different types of experiences. 1. When people on my favorites list call, the phone rings and vibrates for a few cycles, if I don't pick up it goes to voice mail
2.When a call comes in labeled as spam I get the same thing, it rings a few times and then goes to voice mail.
3.If someone from my contact list calls, it rings for half a cycle and then it goes immediately to voice mail. As you might guess this is a huge problem.
I do have "silence unknown callers" switched on, but is should not be blocking callers in my contact list. Any suggestions, thoughts? Software and carrier settings both are current, no updates are showing.