A support popular one although it hasn’t been aired in a while is “Vovin’s Freezer Spell”: 
This is “low” magic, meaning witchery, rather than high magick which is ceremonial.
My own method is to use poppets. I make a simple effigy of the person, name it as the person and it becomes the person. I use string or tissues, you can even make a paper cutout or didn’t need to be fancy. What happens to the doll happens to the person.
So next I take red thread, and with intention wind it around the poppet, talking to it, telling it firmly “you are bound! You may not speak against me, you will not work against me, i bind you to my will, I bind your mouth, I bind your heart, I bind your arms, your legs, you may not move against me…” and go on like that as you wind the thread until you feel it’s enough and you made your point.
Then I put that in the freezer in a baggie and forget about it. I might bury it if I want them to decay as well. (Use cotton so it can rot)