My boys father doesn’t help with our 2 boys

Hello me and my boys dad have been broken up for 2 years now every since I left him he doesn’t help me support our children the last time he’s giving me money for our kids was last year in February that was only 40 bucks he hasn’t giving me a dime since then and he’s 7 months behind on his child support I am having to get ktap because he doesn’t wanna pay his child support I am the one who’s been supporting the boys without his help I am the one who buys there diapers, wipes, clothes, shoes, groceries for them everything else they need plus pay all my bills I honestly feel like he doesn’t deserve to be in his kids life for simple fact he doesn’t help take care of our kids and doesn’t even wanna work to pay his child support he expects me to do everything on my own when it comes to our boys he acts like it’s not his responsibility to help with our boys I haven’t let him see the boys since august of last year there isn’t a custody agreement or anything either I already spoke to my case worker through the child support office she also told me if I don’t want the boys to go with him I don’t have to until something is setup through court. Honestly I have talked to him countless times about getting his life together for our kids and start helping me provide for them but I

Shouldn’t I have to tell a grown man to help support his kids he should be willing to be a better father I shouldn’t even have to tell him to get his life together or even pay his child support I have open my mouth about this situation for 2 years with with I am honestly tired of it if you can’t act like a father and get your life together and keep a job and help support your children then you honestly don’t deserve to be in there life is how I see it now you can only

Give a person so many chances before you realize that person doesn’t care am I the only mother who’s been dealing with this I honestly need some advice.