DISGRACE. AVOID AT ALL COSTS. Changed from O2 a year and a half ago. Just realised they have continued to take my money via D/D dispite cancelling. Called and spent ages getting it sorted. Eventually received an apology, cancelled D/D on phone while I waited and they applied to 'authorisation team' for refund. said I would hear shortly. A few weeks later, received unpaid bill for that month, and threats of disconnection etc. I was so distraught, got my wife to speak on my behalf. same process, apology, cancelled while on phone and said we would hear. Just received Disconnection notice. 2 months worth of an 'unpaid' bill, threats of credit rating, debt agencies and courts. Tried to call, but they won't pass my security as I can't give amount of my last bill (a year and a half ago). Told to go into an O2 store. Despite saying I didn't have time, they said they couldn't help me. So went into store with driving licence and bill id, but they wouldn't clear me because I couldn't give amount of last bill! Beyond anxiety-causing stress. this will jusy multiply month on month. What am I supposed to do?