I know that feeling so well of them being like a brick wall.. I used to tell my exabf it would hurt less to literally go bash my head against a brick wall. He didn't care; he also had no empathy.My advice to you is quit trying to get through the brick wall because you will fail everytime and get a massive head injury in the process.
Try to get away from him. We are here to help and support you.
Hugs.