I paid a contractor (an alleged licensed plumber) to install a gas furnace and he did a subpar job which consists of a questionable "brand new unit" leaking after 3 months resulting in repairs by another plumber because the contractor did not honor his part to make the repairs. Furthermore, the contractor did not pull the permits for installation as promised..when that got resolved, the unit failed inspection twice! I am done allowing him to redeem himself and convinced that he is incompetent and believe I have been a victim of consumer fraud! I have demanded a FULL refund of all monies paid including reimbursement for the work the other plumber did as well as costs related to cleaning the water damage to my carpet from the leaking unit. The contractor has refused to oblige! What now?