No one on the line.

collection agency

Call to voice mail from 1-877-769-0759  Caller ID herself as Mary Jones from United Collection Bureau (automated voice).  Asked someone with a name not known to us to call 1-877-769-0759 about a very important matter.  These morons actually have their computer programmed to say "If you listen to this message you are who we say you are..."  Craptards, idiots and morons.

Caller ID - the great equalizer.

Yes new number probably a debt collector.   They either don't pick up or if you do they just yell at you and hang up.   So it's worthless to even attempt to talk with them.    General rule---all debt collecting should be in writing.