Goodman manufacturing Defected air handler Houston, Texas

I purchased a goodman air handler on 06/23/2009 on 09/07/2010 my a/c broke and the a/c company found that the air handler has bad coils that are leaking. This will cost $580.00 in labor. I call goodman to report this defected product because this should not happen to a air handler in 14 months.  I spoke to Jose in Consumer affairs at Goodman he stated it because I have a mix match a/c unit in which I stated this to 3 a/c companies and they all said this is untrue. It has nothing to do with the outside unit.  I then spoke to his manager, Sashi that stated the same thing. this company is a rip off that sell defected items. I had a air handler prior to this one that lasted 17 years and 5 of those years had a miss match outside unit.  This company has a commercial that states there products last and last. What a Lie.