its from a Ohio based debt collection agency known as CBCS. All posts I've read on them said they were cell phone bill related.

This phone number belongs to a debt collector. If you get a call from this number, do not answer it.

wireless bill collection agency
do not owe any to a wireless network

they keep calling after appropriate hours and this last time it sounded like she was in her car listening to music and she kept saying hello on my  voice-mail. don't answer when you see this number