find the original installer did a crappy job, but the state will not provide any support in seeking restitution from the original installer.
Maybe if the install was unsafe or not to code, but in general, the state should not be involved with a contract dispute between two private parties. References, good contracts, bonds, independent design/contract/final review - those are the solutions. Without help, an inexperienced homeowner is unlikely to fare well when contracting with people who know the business and do it every day.