In Reply to: westpac cards at atms posted by gmacca on Saturday, 27. April 2013 at 07:28 Bali Time:
ALL banks use international networks for international transfers (ATMs etc). There are several - Star, Maestro, Plus and many others.
Most real banks belong to several of them. Westpac is very certainly a real bank - and most Indonesian banks would also belong to several networks.
If you've had a problem - it's your individual card. Did you inform Westpac that you intended to use your card in Indonesia? Did you have a +ve balance?