Everything we row my ex says thats it im not going to see my daughter?

what should i do . he was gonna take her out this weekend now he is not . my daughter don't no if she is coming or going . i really have had enough . he said some mean nasty things to me .so i said worst mean nasty things to him .ive told him he can not bully me and expect me not to respond ,i said if you do not like in don't diss me if he cant handle my response . he always threatens me with my daughter and him refusing to have access . i told him tonight just to get out of our lives if he keeps messing her around . i want my daughter to see her dad i feel i have no right to stop that . but i nearly changed my number .we cant carry on like this with his hissy fits . my poor child don't no if she is coming or going . what do i do rid him out of our lives and move change my number . i feel that would be wrong to do i cant take no more