A collections agency, CMI-Credit Management LP, is trying to collect for a bill I do not recognize. They purchased this from XXXX after I closed an Internet service account. XXXX claims I had a cable modem that was theirs. 

This is false. Prior to XXXX 's acquisition of XXXX XXXX, I purchased my own modem to receive an upgraded XXXX service ( and avoid modem rental fee ). Upon the acquisition, I some how ended up in their system as a modem/router rental account. I had to dispute, on a couple of occasions, a " Wifi service fee '' that XXXX never provided ( I owned both the modem and router ). My guess is I was still marked as owning equipment in their accounts.