So is it wrong to contact my child's father anymore due to the fact I always get into a argument with him

Depends on why you need to contact him. If it's about your children and it needs to be said then by all means you should try but if it never gets resolved and always ends in a battle maybe it's not worth it.

Only you can answer that question. If you don't mind the arguments then by all means contact him. But if you do, well then I think you know what to do. Good luck!💖