Demon In My Dream Tells Me His Name And It's A Real Demon

I am still shaken up from a bad dream/nightmare I had last night. It started out with me cuddling with a strange dog. Seemed normal enough until this dog began to sing this old song, something out of the 30s or sometime around then. Then it transformed into a man. The man then had me get in my car but he drove. He seemed nice, I asked if he had any marijuana and he opens his wallet blows in it and marijuana appears. He offers it to me to which I was happy, then since I obviously did not know this man I make the comment and tell him, well you must be good, to which he answers not really, so I start to get scared and then I say, well are you bad to which he replies not exactly. So at this point in my dream I ask him, well then who are you? He kind of hesitates then gives me 2 names. He says, I'm Gamigin, lillin and I say ok l. At that point we arrive at our destination. Its an apartment filled with strangers who were waiting on me but would not tell mw why. Then fear strikes when it occurs to me this guy who brought me here is a demon, he then tells me the women in the room want my soul and hes brought me to them, that it was his job to give me to them and that by doing so he would be allowed back into hell. In my dream I began to pray which made the demon and the people in this place angry. The women came out from the room where they had been waiting on me and they were witches. I showed them the grey streak in the front of my hair, which I have in real life, and told them I was a witch too so while they were confused I tried to escape. At this point I was finally able to wake myself up. I ended up falling back asleep and right back into the dream, this time the demon came to me different but the same goal of getting my soul so he could return to hell. I finally woke and would not let myself go back to sleep. I looked up the names of the demon he gave which were actually real names to real Christian based demons. I have previously never looked into. Any type of demonology nor did I watch anything about it before I went to sleep in fact I have never heard any of the names before, which scared me a little more. I have always been sensitive to spirits and energy but never anything like this nor anything that ever scared me this much. I will also add that about 2 years ago my younger sister started dabbling in witchcraft and brought in a Ouija board and messed with it as well. I was not home during this time and she has since moved out but I fear she may have opened something she had no business to. Sidenote the past few weeks I have had experiences with something cold on the back of my neck, the house being incredibly colder inside than the temps outside, lights turning off and on for no reason and weird unexplained noises. I also have been unable to sleep at night until last night when I experienced this scary dream, I generally sleep when its light out a habit from 3rd shift working. And I have only been back home since November. Any help on how to handle this and keep it from happening again would be great.