Question: how to ruin your landlord's life?
Answer: Start a written record. The problems with my landlord started almost immediately after I moved in. ... 
Check your lease agreement. If your landlord agreed to something in your lease, he has to follow it. ... 
Send written requests. ... 
Decide if you have a case. ... 
Seek legal assistance. ... 
File a civil lawsuit. ... 
Fight discrimination.