American Home Shield - Home Warranty Service Would not honor home warranty contract and fix air conditioning unit cARROLL, Iowa

I purchased a home warranty from AHS.  I have had it for seven years.  My AC unit broke down.  They refuse to honor the warranty.  They say it has not been maintained.  I have had the unit maintained twice a year every year.  I sent them the reciept from the maintance company. They still refuse to honor the warranty. I am a 78 year old male.  It is over 98 degrees in Florida.  My home is hot and I am on a fixed income and cannot afford to replace the unit.  That is why I purchased the home warranty.  They refuse to even work out the sitation.