Thanks for all the replies. The flat is my own so I have no landlord, and I will ask if the estate agent took a reading. Is is company policy for BG to refuse to transfer calls to more senior members of staff?

Hi, I'm looking for a bit of advice. I recently changed house and thought I would stay with British Gas, on the phone the lady asked for the readings of the new house, I told them to her. Now 3 months later I have received my bill, a whopping £700. It's a small flat, and my old bills are all around £150 mark. Now I called them 2 days ago and it appears they don't have my initial reading, they've estimated my initial reading. The billing dept. were closed so I called today, first put to someone who didn't understand what I was saying, then onto someone else. He told me that they had liaised the previous utility company, but then he asked to confirm me to confirm the reading. I don't have a copy of it, but he had told me that they had it. So I said to him ''Please tell me the utility company you liaised with to get my reading,'' He told me he did not have to and that he was not going to. So I said then tell me the reading you got from them, again he refused. So I asked to speak to his supervisor, this made him quite angry and he started raising his voice and he told me he was not going to pass me to a supervisor. I asked again, quite calmly to speak to a more senior member of staff. He refused again so I asked his name, he ignored me 5 times, on my 6th attempt he said his name and said goodbye. I was shocked by their service, I don't know if i'm in the right about the estimate and their customer service has made me disgusted. I think I will pay this then leave them. My question is; am I in the right about the bill? Thanks for reading