It's called 'caller id spoofing'. The people calling you can make any phone number show up on your caller id. They're making a number show up that charges you money if you call it and press a certain key.
At the same time they've disguised the messages on their pay by phone system as surveys. Those messages normally tell you what you're buying and how much it costs.
Check your bill for unwanted charges if you called this number back.
Got a call from this number and recognized the area code as LA. Since that's where I grew up, I answered it thinking it might be a friend or family member's work number. The recorded message said I had been chosen for a short 30 second political survey about the nation's debt. I just hung up.
Got a call at 1057 EDT 31 Jan from this number. Was a recording from "Ann" who said she was with Political Opinions Of America and wanted to ask me a few questions... I hung up.