Hodgehegs! Glad you made it! WELCOME!
Sadly 1 in 4 women experience an abusive relationship in their lives, but the figures are increasing, and probably nearer 1 in 3.
While it's distressing to know that one single other woman is going through this, at least you now know that you are NOT alone, and what is more, you need never be alone in this again!
keep trying the WA lines, when your DD is asleep at night they may have some capacity, as those IN abusive relationships tend to not be able to call helplines at night 
You have a very good friend there, you are so blessed. Now you have US! the mighty MN! We're an awesome bunch us lot, not bad at all for a nest of vipers!
Pop by on the EA Support group thread www.mumsnet.com/Talk/relationships/1308894-Support-for-those-in-emotionally-abusive-relationships-5 You don't have to know anyone, you don't have to be up to speed with the conversations, you can dip in and out, there is always someone there!
IMHO, you need to personally limit any contact with him, change the access agreements to supervised via contact centres, due to prolonged psychological abuse, you have reams of evidence, and state that you refuse to place yourself in a position where he can get to you anymore. It's been 3 years and he's still being a TWAT (technical term [hgrin]) and feel it highly detrimental to allow your DD to see this treatment of you.
Change your number, keep the old number only for him, tell him that you will only discuss child access, nothing more. Don't speak to him on the phone. If you do find yourself on the phone with him, and he strays from child access discussion, hang up without warning and immediately.
Don't rise to ANYTHING, come on here rant, kick the cat, (not really)! but don't reply, don't rise. Don't take his calls. Remove his supply, remove the target.
Sure it'll piss him off, and things may ramp up a bit for a while out of his panic at losing his 'fix' but allow the fear and chaos to wash over you, stand strong and you can withstand it, you are so strong love!
Let him see that he gets NOWHERE at all by doing it, not even pissing you off. THAT is the only way you MIGHT get him to leave it alone. Bore him to death! [hgrin]
Glad you made it to MN, really thrilled! [hgrin]