ULPT request- How to Legally mess with Landlord

Land lord has been fucking with me. Took out a renters insurance policy to his specs. He then made me change policies, this is how the third time, and I now have no money for food or gas the rest of the month outside of 3 slices of bread and about $7. He also enters my property without notice all the time.

I want to know what I can legally that will cost him as much time and money to take care of as possible, thousands of dollars and weeks of his time would be hilarious at this point.