Two years ago we ordered our service cancelled and account closed the day we moved from our apartment into our duplex because we decided to switch our service to TXU. When we cancelled our service with GM we had a balance due of about $350 which we were prepared to make payments on. A month after moving to our new place we received a collections notice from Credit Systems International (CSI) for an outstanding balance of over $950!!! When trying to contact customer service about it I got lost in the voicemail labyrinth and just gave up... read full review »