I have all the settings set to not allow any calls through when do not disturb is active, including silence set to always, no multiple rings allowing calls, etc. and yet every day these spam calls are getting through and ringing my phone. I have read so many articles on the subject, forum posts, etc. and nothing is answering the question of why these calls are still coming through. If anyone has insight I would really appreciate it. This is an iPhone 6 running the latest iOS revision on AT&T.