how to deal with BILs

Vanessa • Vanessa ❤️️💙
I'm so angry, sad and confused about my brother in low. 
He's rude, sexist and thinks he's all that. I've been together with his brother mark for 6 plus years and I've learnt to cope with him hating me because I stand up for mark as he alway bullies/bosses my around. But a month ago he came to our house and started pushing his weight around. TTC has made me touchy so I finally had enough and said no to him. Well that lit a flame under him and went into a big rant. 
1. I told him he carnt come into our place and speak to us like that and told him to leave
2. He started to call me all sorts of names. Fat pig, mole. Ugly bitch ect:
Mark jumped up and told him to get out and he wasn't welcome back ever again
Since then he constantly tells mark to leave me and still calls me al sorts of stuff. And I'm scared he is gonna hurt one of us. 
What should I do. How do I handle this and stop it wrecking the best thing I have. And stop the stressing from reckoning us ttc