I have been constantly getting a call from a number with a 405 area code (Oklahoma City area) and it won't stop trying to contact me. I ignored it the first two times because it called me while I was at work, but it just called me a few minutes ago and I decided to answer. I could hear some movement on the other end but the person didn't speak. They hung up after 8 seconds. I ran the number through a Google search. I'm seeing some sources claiming that it's a marketing call but there are other people who had the caller hang up not long after they answered their phones. I never found any sort of business to which it could belong.