Had a similair problem when I was in Philippines in 2004. Metrobank blamed Natwest, Natwest blamed MetrobankFunny how it worked in Hong Kong, Dubai and Doha, but as soon as I arrived in Philippines, it clammed up, holding back much needed money
Always laugh about Metrobank logo "Your in safe hands"
On top of that I couldn't use my Paypal account to send myself money by Western Union or Xoom, as my Paypal account was blocked for some fault of not my making.
Luckily I had my credit card with me so not all was lost.
Have you tried other ATM's in the area? Cirrus is part of the Mastercard network, so any ATM showing the Mastercard symbol will take the card. BPI are probably the best bet.