Emotionally confused

I like my boyfriend a lot  I've been with him for a year and half  we spend  most of the time together  but just some stuff he does consently I really hate that's I've told him like when he get really mad he calls my  nigga and bro that's really upsets me I feel like it disrespectful I've told him To stop but he seem to not control himself when  he is mad  
At  times I feel like he takes me for granted but I don't know how much more I can take feeling like that unappreciated  I don't know what to do about it ?