XXXX continues to send fraudulent debt charges to a new debt collector. I severed my service after working with their c/s to improve service outages, dropped calls and roaming when I was local. I worked with them by using new phones and repeater antenna. None of their failed solutions were successful so I was released by them from my service. I was not under contract any longer. I returned all phones, and paid my last bill. They are charging me for returned phones and service long after I had ported my phone numbers. I have contacted them, and each of the debt collectors by phone and in writing. They continue to harass and lie about the charges.