2. Return all electrical appliances and tap water switches from morning till night every day (you shouldn't pay back the money next month, should you? )
3. Break things that don't belong to you, put some footprints or spray pictures on the wall.
4. After moving out, I kept returning harassing calls.
You can do it, but some things are broken and you have to lose money. It is difficult to retaliate against the house.