How do I either get rid of a paranormal entity, or kill it?

I've had a paranormal entity in my home since 2008 when I moved in. It became active in August of 2010. Ordering it or asking it or threatening it to leave does not work. Open Bible under bed (some activity in bed), burning white sage and ordering it to leave--nada--I burned it in every room. I tried a half-gallon of Holy water and a paint brush and did painted everything including windows and doors, incuding a wash cloth bath, drank it--nada. Catholic Deacon--nada. Mediums? Fake. Psychic police--nada. I made a deal with it so I could sleep and it could connect with me twice a day--got disgusted and now I've stopped that and refusing it. Anything I have done is out of ignorance in the beginning, or failed help. I need real suggestions from those who have had real success against entities. Please. This thing is defiant, devious, can reason. I've had emotional problems all my life--it's not that. Addictions all my life--not that--my act is cleaned up. I am mildly sensitive--might be that. I'm on psyc drugs, not that. I've made an appointment with a psychiatrist out of desperation. This thing is real--no crackpot, new age, crystal rocks, religious persons need apply. Been there, done that. I've had so many hopes and disapointmenting results--I'm justifyingly cynical. My attitude is fatalistic. I want it gone or killed. Either/Or. Please, I'm suffering--no glib answers or comments. You don't know or can't help--please find out and contact me. Please, help a fellow human being. Thank you.