That's for the universe to decide and just because you have annoying neighbours, and their friends of friends of your landlord doesn't mean they've got any major karma debt to repay because of it anyway.
Life is unfair a lot of the time but you just got to deal with it.
@Nard You do not need to be from a powerful family to use The power of three, every single day when someone goes to a church, chapel or even at home etc and honours(I dislike the word worship) "God" or any deity that has the princable of 3 in the structure e.g as in "Father, Son, Holy Spirit" and "The Triple Goddess" e.g "Maiden, Mother, Crone" From my personal own view point I honour "The Morrigan" who has aspects of a Triple Goddess.
Anyone can use the power of three it's has been a spiritual and sacred number for centuries.
Love and Light