Incoming calls from a single phone number do not come through (do not register, at all). All other numbers work.
I've recently realized that one particular phone number in my contacts cannot call me on my iphone, whereas all others (at least as far as I know!) can do so. Also, I can call that phone number just fine. Texts in both directions are not an issue, just the incoming phone calls from them to my phone.
When that particular phone number calls me, I see no indicator or ringing. Also, on my phone I do not see a "Missed Call" either, afterwards.
All other phone numbers (to my knowledge) seem to be coming through just fine and I receive the call.
Also, I can call that problem phone number just fine as well.
Has anyone experienced this issue?
Do Not Disturb is not on for that number or any other, nor is any kind of airplane mode, and that number is not blocked.
Both phones are iPhones. My phone is an iPhone XR running iOS 13.6.
I know a question like this was posted here before, but no solution was identified and confirmed as a fix.
Thanks in advance for any help. The number that is being blocked is a work supervisor, BTW!
iPhone XR, iOS 13