getting calls at all hours from a 4 digit number that appears on my caller id. They have called at 11:00 pm. My husband and I both answered these calls and the person is always foreign and does not have command of the english language. They ask for someone, can never understand who they want, however any name they've used sounds nothing like ours. We've told them they have a wrong number and to remove it from their list. They will call up to 10 times a day. They are extrememely rude, will not put a supervisor on the line. I actually asked this woman if she was too stupid to understand do not call, wrong number, never says what she wants. I've called my phone provider, and of course no help there. This caller only started after switching to comcast phone service. This service does a poor job of blocking unknown calls or incomplete numbers