I'm sorry if this is offenseive but this is my opinion no person has the right to do anything like that to a human being. If he is abusing his powers cast a protection spell like someone else said or just try to point it out to him. If he is doing this he will suffer in the long run. Never try to take the law into your own hands please, just listen to what I am saying. Cursing him will only be bad for you. I think you just need to take a deep breath and think of other options.
I'd just use a retribution spell, something to show him the pain he has caused to you, do this with a somber soul and not a vicious one or the Goddess will find your motives inadiquit and bring your wrath upon you