HI Annastasia. You are lucky to be alive.
Your son needs to be hospitalized for your safety and the safety of society as well as his own safety.
Please do accept the reality of his disorders - there is no cure. This is the most painful thing for a parent to accept. I wish I had more to offer you but cold reality is all I can give you and that's not a nice present at all.
HIs 'good manners' are part of the package with these personality disorders, but he can and will twist on a dime and your life or others could be in danger.
Hugs and love
femfree