I would call to speak to your community team leader, tell her about your appointments so far and your experiences and ask her if you can arrange to see a midwife who is positive and supportive of your choice. Never feel like you are a nuisance, you have a right to a good standard of maternity care and support in your choice, which in my opinion is the best one.
Here are some links which you may have come across already but if not might be of interest,
look here for info on your rights concerning maternity services
look here for info on home birth, support stories and everything you need to know
look \link{http://health.groups.yahoo.com/group/homebirthUK/messages\here to join a home birth email group where you will get support from midwives who are passionate and knowledgable on the subject and also from mums who have experienced home birth or like you have booked one but feel a little disillusioned/unsupported.
Also pupuce is right, sounds like it might be of value to you to build up a relationship with a woman who will be with you for the birth, this will also heighten your chances of having a quicker and easier birth.
Best of luck with your birth, you can CAT me too if you want to chat to somone who has experienced home birth.
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