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.

So let me help you weigh out some possibilities, if holy water, crosses, yadda yadda yadda didn't work then its obviously a human entity. The first thing I would do if I were you would be to look up the background or history of your property or home. It will help you figure out why this entity is willing to negotiate but not leave. You have to think from the entities perspective( I know that sounds strange) but if there was previous disaster it may just need help passing over. It is also believed that some spirits do not believe they are actually dead. So don't give up speaking out to it, if you speak out and say "you are dead" or "go towards the light" that tends to help. I'm sorry you've had no luck so far and I hope that some of my advice helped a little. (If any of those things still don't work feel free to contact me for further help if needed)