The number is calling from Key Research to conduct a survey. I called the # and the message says you can be removed, but when you call the mailbox is FULL!! OMG this has to stop! I am about to turn my house phone OFF!
The best thing to do is file a complaint with the FTC. It's pretty easy, but before you do that, you'll have to put your number on the Do Not Call list first. Yeah, I know that doesn't work, but you have to do it anyway.
Here's the link to file a complaint with the FTC: https://complaints.donotcall.gov/complaint/complaintcheck.aspx