This might be long, so please bare with me. So nine months ago I had a baby, and there were some unpleasant incidents with her father, who I was with at the time, after that.
The most serious one was when she was about three weeks old, and on a heart monitor after almost being a victim of cot death. He went out to the pub and came back completely hammered. Things escalated, he punched a window frame, pulled my hair, threw my phone against the wall in a rage, I had bruises on my face and arm because of that night. The neighbours called the police, although I was blamed for them turning up. He later bought me a new phone, then took that back off me. I have pictures of the bruises.
A couple of weeks later, my parents came to visit. He took my keys off me, told me I had no right to be there, and if I wanted to be let back in I had to ask. So my parents turned up and I still had some bruising, and no keys or phone at that point.
There was also another incident when I felt intimidated and I left the flat in the middle of the night with the baby after calling the police, and then had to stay in a women's refuge for a week.
We are now far apart geographically, I try to be civil and message him about how the baby is and send him pictures. I was going to let him Skype her, but I have been so worn down by everything I don't want to. Sometimes he is civil, sometimes emotional, sometimes abusive. He is convinced I have been having sex with basically everyone, and this is encouraged by his rather unhinged friends, who say that I slept with them or that they know I was sleeping around, which are all lies. The other week I opened my messages to a long rant that included the message, 'you can't make any decisions except what cock to have today.' Nice. 
The other day he was ranting on again, I asked him to stop but he didn't, for some reason I can't block him on my laptop. So I sent a message to his mother, including an example of what he was saying to me. He was furious about this, blocked me and told me not to speak to him again.
Fine, but there were certain practical things that needed sorting out, like the Internet that he still uses in my name. So I messaged his sister, who had previously seemed reasonable, with what I thought was a straightforward message about this. Well, according to her, I 'have no empathy for anyone else', I'm 'deluded', I 'live in a fantasy world', whilst my ex is 'the kindest soul'. Apparently 'women like you are an insult to those who have really been abused' and one day I will 'get a reality check.' With regards to the women's shelter, I 'chose to go' (well yeah, how else would I get there? ). I sent a picture of the bruises and asked how they happened if I am a fantasist, but she just cryptically replied that she 'knows what happened when the police came.' Okay then.
So I have been wondering, how much proof do you need to have for people to believe you? Pictures of bruises, a broken phone, a stay in a refuge, crazy messages... but I'm the bad guy. I'm don't want his family to side with me and hate him or anything, but just to not make excuses for this kind of mental behaviour. (Although I won't be in contact with them now so it is a moot point I suppose) He doesn't even deny that these things happened, though obviously he has a different version of events to me.
I don't know anyone else who has experienced this in real life, so I have come here. Anyone else been through similar, only to be called a fantasist with no empathy? Because it hurts.