Same thing happened to me as everyone else. This number kept calling with the name listed as "unknown name". After the 3rd day I answered just to make sure it wasn't anyone I knew. No response, they hung on for a second then hung up. They are now a blocked caller.
Called me twice. Left no message either time. My rule: you call me and leave no message from a number I don't recognize, I add your number to my call blocker app. Problem solved.
Same thing happened to me as everyone else. This number kept calling with the name listed as "unknown name". After the 3rd day I answered just to make sure it wasn't anyone I knew. No response, they hung on for a second then hung up. They are now a blocked caller.