Anyone been through this before?

I’ve had to contact social work due to my son being emotionally abused by his dad, he’s only 4 years old. His dad abused me for years and has abused all previous partners too. This is his first child.

He’s recently starting peeing himself more often, more timid, and thinks I’m going to get angry at every mistake/accident he has. His emotions are all over the place, and he’s told me of situations where his dad has blow up out of nowhere🥺

He comes home stinking of weed everytime he visits him, he’s been kept out late at night while his dad gets drunk.

I’m really hoping we can get this resolved cause there is no talking to his dad at all, he denies everything 😔