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.
I tried adding this number to my blocked call list, but my phone company says this number isn't available for this service! WTF? How do they manage that one?
Just received a call a few minutes ago. Judging by the times the above posters have posted, this is a new scam. Please do not confuse me with the above posting from "Fed up" as I've been using this name for a couple of years. Please look back on how the phone companies used to charge for a private line vs a party line, Then they charged us for unlisted private number but irritating calls still continued because they sold our numbers to marketeers and scammers. Now, we get charged unknown charges on our bills. Do you suppose it's so the phone companies can provide Robot dialing technology for cheap?