I lived in a rented house and used RCN Internet Service in chicago ... I moved to other city in January 2011, before moving I called RCN and told them to transfer thier service to my new location, RCN declined as they do not have services in that area. I therefore told them to discontinue my services on Dec 17, 2010 as my lease also expired and in hurry I left USA lot of my stuff I left over in the appartment. I came back in May 2011 and got a Bill from RCN about the monthly charges of April 2011. I called them and asked about that, I told them about thier modem leftover there which I can pay. RCN Customer service refused to accept that I called them in Dec. 2011 about the discontinuation. I searched my Telephone record and got the call details and asked about that they refused to accept my documentry proff and now a debt collector I.C. System Inc. addressing 444 Highway96 East, P.O. Box 64437, St. Paul MN [protected] harassing for those charges which I never have used..