I have been receiving a call from 608-864-5516 every 20 minutes. I have a call blocker, and they continue calling hoping to find out when you are home to sell your phone number to other telemarketers. Just let it ring. Let them waste their time and get no results.
I just got a call 2 times in a row from the above number. I let my answering machine grab it, as it did not show who was calling, only the number. They left no message.