Ford Kuga 2013: Automatic transmission problems

My 2013 Ford Kuga diesel (82,000 km) is having problems with its auto transmission. It's shifting very erratically. Ford cancelled the transmission service halfway through and informed us would cost over $10,000 to repair. Looking at forums I can see problems and class actions with other transmissions they knew about but they deny the same problem with ours. Can you help or advise on whether we should make a claim or get it fixed? Surely a transmissions life is not 80,000 km.