Called twice within 30 minutes. I didn't answer; no message left. I will not be calling them back.

This is from an "Auto Processing Department" - the caller refused to give the company's name and then hung up.  I called back and got an answering machine - left a nasty message to them regarding how unacceptable it was for them to call me and then hang up on me when I questioned who it was.  There is also an option to be removed from their list.