I paid an air conditioning representitive 3 years ago, for 3 new AC units.
The installer has been out at least 4 or 5 times and one unit still doesn't
work properly.  I finally called 2 other companies to look at the problem.
They both agreed that it was from poor installation.  It will now cost me for
labor an additional $1,500.  What is my recourse?  The actual company from
which I purchased the units are still under warranty. However labor isn't.  I
even took pictures of the problem.I looked up the installers license and
credentials just about 2 days ago and they came back that his license is null
and void. Where do I go now?