Oh pet, this is horrific. This is what abusers do. They isolate you and tear you done so it feels like there is no way out. They are extremely manipulative and dangerous.
You may think you have no one but that's not true. He has isolated you from people who would help if they knew what was really going on.
You have zero ties to him, no children and no lease.
You have the income. You need to get it transferred to you own account and leave. Take what you can and go.
Talk to women's aid again.
Does your work have an EAP that could help you?
You need just one person one your side and they will help you get out if you can't do it alone. He has deliberately made you feel that there is no alternative but that's not true. People do escape, they really do.
Do you have siblings, family, trusted friends? Even if those relationships soured over the years, they can be rebuild. It took my friend 12 years to leave and our friendship had dropped in that time. I didn't know the half of it but when she called me I was there. Please reach out to anyone you can.