I recently returned from Switzerland (14 days ago) where I was swapping out SIM cards with a Swisscom card. I'm now back in USA using my Verizon SIM and everything is fine EXCEPT when dialing the overseas number I use the most: my parents. (Other overseas numbers work fine) When I do so, I get a Swisscom message (in German): "The chosen subscriber does not wish to be disturbed". My parents have done everything they can think of with Swisscom to determine whether something is blocking my call from their end. Swisscom says No. Callfilter is off, Do Not Disturb is off, Reject Call(s) is off, etc. Using someone else's phone gets me through with no problems. Using my phone (Pixel 2) gives me the "No Disturb" message.
But I remember something that makes wonder: A day or two BEFORE I left, I was using dial pad keys to maneuver through multiple messages on my voicemail. At one point, I got bored and started punching random keys, including * and # keys in succession. Is it possible there are some 'secret' Verizon service codes that might've been activated that is causing this problem? The entire family is flat out of ideas, as am I. Verizon is pointing fingers over there, Swisscom is pointing the finger over here because they can't find anything wrong. Does anyone here have a clue?