Calls and doesn't leave any msg. *67 back from cell and it goes to a fax machine. Obviously a spammer hacking someone's #.

Yes, it's the hacking spamming anal warts again, this time they have high jacked one of CoreComm ISP's dial up internet lines out of southwestern Iowa. This is a call to line only, shouldn't be any calls coming out from it, and the "fax" machine noise you hear if you call it is because it's trying to talk to your computer, it thinks you want to go online.

One of multitude of unwanted calls we get daily

Called at 7:00 in the morning.  I answered it to stop the ringing so grandchildren wouldn't be awakened.  Caller asked for my husband, who is deceased.  I hung up.

Didn't get to phone in time to answer.  I called # back and got fax tones.  I agree it must be spam.