Newtzy, I am so angry for you, I can't believe what has happened.
Don't take any crap off these midwives. No one has the right to treat you like this. You should be treated with dignity and respect all throughout your pregnancy and your personal point of view should be taken into account even if you change your mind at any stage. They are not qualified to judge you on your PND - leave that to the doctors.
I would complain to the head of midwifery at your local hosp, as well as your GP surgery's patient liaison group if they have one. You can even complain to the Royal College of Midwives. I don't know how it is where you are but in my area the midwives are attached to the surgery so I would change to another surgery if an alternative midwife couldn't be found at my current surgery. I would also ask to see another midwife at the hosp for all my antenatal appointments if this isn't too far away for you to get to.
All medical staff have to follow a certain standard when dealing with antenatal care. Look at this www.nice.org.uk/CG62
These are the clinical guidelines they have to follow. Please please take your time and have a look at this (a bit long I know) but it tells you what to expect from medical staff. They all know about these - it was a GP who told me about them. There are also similar guidelines for induction and labour (natural or otherwise).
Also I would get hold of the consultant details and check with him/her whether it is really necessary to be under his care just cos you've had PND in the past. I bet they'll be asking themselves why the midwives have referred you when you have no complications.
And don't be afraid to pick up the phone and call everyone - I'm always calling the hospital with my questions cos I find them more helpful than my GP surgery. Don't be afraid to pester people and certainly don't let them fob you off.
In the past I've been bounced between my midwife and the GP in the surgery. The GP couldn't understand why the midwife couldn't have done her job instead of sending me across the corridor to see him. I said look I'm the patient and I don't care who deals with what just deal with it. He felt sorry for me cos I'm so huge and made an exception. So be aware of being caught between different points of view between doctors and midwives.
So speak up if you're not happy with something and tell them so.
Don't let two bullies who ganged up against you ruin what should be a happy time in your life. You have had four great pregs in the past so please don't feel negatively about this one just cos of these midwives. If I was near you I'd come down and give them a piece of my mind. Grrrr. I hope this has made you feel a bit better now. And congratulations on this pregnancy!
PS My partner is leaving all decisions to me so I know I can't rely on him which is why I've done all this research. Also my dad died this year of diabetes and I don't have it so I would ask "WTF has this got to do with anything?" I would also say "WTF has PND got to do with this pregnancy?" There are signs up all over the place in the surgery and hosp saying that the staff will not deal with abusive patients but just be aware that you, as a patient, don't have to deal with abusive staff either. You are a lady who is pregnant, not a mad woman, and you should be respected and treated in a civilised manner.