1.“괴롭히다”
2.“방해하다”
3.“폐를 끼치다”
4.“귀찮다”

1. When the someone

who have more powers than you gives you hardtime such as hit you or take your money.
In case the someone 괴롭히다 you

2. When you have to finish your homework right now, but your brother watch TV beside you with high volume
In case your brother 방해하다 you

3.  When someone help you who might spend his efforts(time, money), then you can say him it as a way of "thank you"
In case you 폐를 끼치다 to the someone

4. When your brother ask you something to do for him endlessly such as "bring  water", "bring remote controller", "bring foods"
In case you feel 귀찮다