Unknown caller. when you answer the caller hangs up. Call back you get "you were in a servery, but the time has expired, press 1 to remove your self from the list"
This happen to me about 3 weeks ago. I press 1 and still getting calls.
Calls continue to come in from this number, day and night. I do not answer their calls and the do not call list does not help block it. I have them listed as scam on my phone so they will not be answered, persistant pain in the rear end though.
Got a call from this number today less than an hour ago. Unrecognized numbers don't get answered as I feel they'll leave a message if it's important enough. No message left by them.