This is something I wrote as a post to a person to deal with a haunted home. It might be of use to you.
Do not use smudge sticks or bundles of sage, salt, rose oil and other stuff as it will not have a permanent effect. Often they will give a few days of relief but then it all starts back up with a vengeance. Don't get any ghost hunters in there because they will just confirm that your house is haunted. And trying to communicate with the spirit(s) will only make things worse for you. I suggest that you do a Christian house cleaning and if you are not a Christian then just forget everything I am telling you because it won't work. If you are a Christian or can get a christian (maybe a pastor or christian friend) then this is what you need to do if your house is haunted:
1) Before you do anything, find out about the history of the house. Ask neighbors about the history of the house or go to the library or even historical groups who might be able to tell you details. Ask God to show you what happened in this house that needs to be dealt with. What you are looking for is sins that have happened on the property and keep a detailed list. Look for acts of violence, crimes, tragic accidents and acts performed by the occult.
Once you find out what the sin is that allowed the demonic in pray this prayer in the location that the sin was committed. “Lord Jesus I ask that You forgive and remit ( add detail of the sin or sins here) in Jesus name. I ask that You would cleanse this (location) with Your holy blood and wash away the sins that have stained (location), in Jesus name. Then say this “ All demons that have lost their legal rights, I command you to leave this place and never return, in Jesus name.
2) If you have just moved in to a place then clean up all the previous occupants stuff. Clean up every nook and cranny. Throw away everything you can that is not nailed down that some left behind. Go to the basement and toss out everything. Remove old stickers, pictures and furniture.
3) Ask God to show you if there is anything else that needs to be tossed out. Generally if you get a creepy feeling from an object, toss it out. Also go thru your own belongings and toss out everything that God would not be pleased with.
4) Get a small bottle of cooking oil (doesn't matter what type, but I prefer olive oil) and say this prayer:
Lord Jesus I ask that you bless this oil and purify it. I ask that You make suitable for anointing my home, in Jesus name.
5) Open all doors and windows and start at the furthest place away from the front door then pray this prayer: Lord I ask that You forgive those who have sinned in this place. I ask that you forgive (Here is where you will need the list of sins. Go to each room you think the sin(s) were committed) and wash away the memory of the sin committed. We ask that You bless this room and let Your peace fill it. Lord let all who enter here find Your peace. Lord I ask that you send as many angels to this room as you see fit to ensure that no one is disturbed in anyway. (add what ever you wish here) I break all curses that have been placed on this room, in Jesus name. I command all demons that have lost their legal rights to leave this room and go where ever Jesus commands you to go, in Jesus name Amen. Then anoint each door way and window frame with the blessed oil.
6) When you are done in each room go outside and say this prayer: Lord Jesus I ask that You forgive all those who have sinned against this home and this land. I forgive those who have defiled this house and land with their sins. I ask that You forgive those who have lived in this place and those who have defiled it thru their sins and forgive all their sins. I now ask that you cleanse this home and this land with Your Holy blood and wash all evil away, in Jesus name.
These instructions give you a good basic idea of what to do. Look at the links below for more ideas.
Haunted Homes & Land: Demons inhabiting property
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ttp://hannahscupboard.com/ST-house-blessing.html
Ghost in the house
Obstacles to blessing a house
Real Haunted House - YouTube