Very disappointing - no help from Vaillant! 2 Clim...

Very disappointing - no help from Vaillant! 2 ClimaVair air conditioning systems from Vaillant bought expensive 9 years ago, installed professionally by installers. Now both indoor units are defective at the same time! No help from the customer service phone, email to management without results! No more spare parts available! No help from the service consultants. Air conditioning technicians from other brands cannot help. Vaillant totally lets customers down. Probably not enough in this sector.