They've called my home AND someone I previously worked with, how they got his cell number I'll never know.  When I've tried to call them back, I got a voicemail saying the voice box was full.

Kay Jewelers, maybe a bill collection, it was a recorded message asking to return a call

Yes that is right its kays jewelers

It's Kay Jewelers.  How and why they are calling from cell phones to collect is beyond me though.

They keep calling my fax number at odd hours.  I haven't been in a Kay Jewelers in 30 years.