God I know how you feel! Try MAM bottles. They are fiddly, but great. Try changing the position you hold her in? I find my DD, who still wont take a full bottle from me, takes it best when I hold her either facing away from me but against me, cuddled in and softly speaking/reassuring, or with me sat with my knees up and her rest against them, holding a finger.
I would also say, dont stress if you can. My LO can scream and scream, if she gets like this I know she wont do it, so I have stopped forcing her. I give it about 5-1o mins as sometimes she is just stubborn and thinks she will get BF if she fusses, but I can now recognise her cry and if it seems she is actually unhappy rather than trying it on, I dont push it.
I know I have not answered your question properly, but wanted to share my experiences of what sometimes works, and to let you know you are not alone.
She is almost 8 months btw. I been offered so much advice, withold feeding - they wont starve themselves/feed when starving/dont feed when starving/feed when tired/dont feed when tired. Its all been hit and miss.
I have just posted a thread actually, today about whether to go cold turkey or wean gradually. Maybe have a look and see if we can get some answers together.
I dont know how to do link, but its under this topic area...