TELL ME IF IM WRONG

I have a 3 year old he will be 4 December 13th . His daddy isn’t in his life like I would like him to be . His family want a dna test I told them they can get one but I’m not paying for it or going half because they want it . These people stressing me out since I found out I was pregnant. They had people to try to fight me while I was pregnant.. They even did a Fake DNA test on my son in 2017 they said they sent it off on Christmas and got it back on the 3rd of January. I found that same test on google . I ask him to get his son some diapers in 2018 he said no his gf comes first so I Put him on child support. Like he cheated on me why I was pregnant and almost gave me something. Also I told him he can see his son he told me he can’t. So his family told me they want a dna test to bring him to court I told them okay when they said they will let me know when they available that was 2 months ago I block them . They move to NY so I couldn’t know where he world but I call CSF And told them am I wrong .