I hate his bitter baby mamas

Ok. My husband has 4 baby mamas and 2 of them are sweet as can be and then the uther two are as rarchet as they come. The worst one of them all is so evil, she dont let us see her bc, well I really don't know.. We chose not to tell any of them where we live and my daughter showed her where we live and since then we have not seen or talked to them and mind you he pays child support faithfully... She had my daughter call me and speak disrespectfully to me and it really hurt my feelings, I miss my baby so fucking much im literally going crazy its been 9 month's... Now for the 2nd one I do everything I can to help her cuz shes a bumb, now dont get me wrg I know it can be hard being a single mother, I know cuz I have 4 of my own with no help from there dads so I know how it may feel but when you dont try, thats what bothers me, cant keep a job, no car... Just not trying and I help, when I say I help I help, I leave wrk, I pick him up and drop.him off at school everyday, feed him and still provide food for him to eat when he is there and hes barely there. I help as much as I.can but what gets me is when I cant and say no cuz I.cant put myself and a bind she feels like she can talk shit to me and right now ive had enuf. Like wtf shid I do. I can't turn my back on my son but like wtf... He dont wanna deal with these hos and I dont blame him so like wtf... Please give me some advise.