Okay, I need some serious advice.
I did a summoning about a week ago, and ever since then, the demon that came has decided to stick around. I've tried just about everything to get rid of this thing. It hasn't hurt anyone yet, but it's really annoying. It keeps turning my tv off when I'm watching it, on when I'm trying to sleep, stuff like that. What do I do?
If you feel you want it gone, you should do a banishing and smudging of the space. You should also fan the smoke onto yourself to rid yourself of negativity. You can bless the area while cleansing it.
Sounds more like fae to me. Try getting a package of iron washers and distributing them throughout the house, in every corner. Alternatively you could use hemetite but that could get expensive depending on the size of your home Don't seal off the door or windows. In fact, if you can, before distributing, open a window to give an exit.
You have to understand that there is no true line between low angel/demon, nature spirits, and fae. Its just different cultures using different words to describe and then combining together to create arbitrary separations. Likewise "demons" are mostly pagan gods and true daemon are semi-divine. Higher "angels" can be considered daemon. A daemon or god would not waste his/her time playing with your tv. Fae, however, are vindictive and will put time aside just to mess with you. But they aren't "evil", destruction and mischief is in their nature, so anything positive or "holy" will not work against them. You have to think "anti-magick" or "anti-spirit".
Try trapping it in a room using a barrier. Then work from there killing it. If you can make your energy pierce there heart they die. Or you could try talking to it :/ not all demons are bad....
Can I just make it clear that you CANNOT kill a being of energy for one energy ,as the laws of physics will tell you cannot be killed, but only transmitted into another form.