Who called from 3139181904

This is one of the phone numbers to a collections company in Detroit, called Diversified Consulting Solutions. Other numbers that I found them to use are:

313-263-4266
313-202-9622
313-483-7602
313-483-7603

Called me twice today. 9am and again @ 3:30pm. Does anyone have any idea who they are? or what they want?

Not sure why I keep getting calls from this number. It's my work phone and not published. Must be a robo caller or something

Tired of this number calling me several times. Getting so annoying. When i do answer it noone talks and the phone gets disconnected.

I keep getting calls from this number when I answer there is no one there . This is a business the state of michigan.