I havent had anything happen to me but my mum has. When she was with my father, after he would hit her she would stand infront of the kitchen sink and would cry. Everytime that happened she felt something stroking her back, she found it so comforting. She believed it was her nanna. Then when her pop died in 2001 she got his car in the will and she believed he was in the car with her everytime she drove it, until she was done grieving he left.

My mum saw a psychic and she was told she has many spirits surrounding her, looking out for her. Maybe you should see one and see what they say, maybe they can tell you who is doing it.