I don't know why people blame the EU for this.
Greece cooked their books in order to make it so they could join the EU, they were already a house of cards financially before they joined.
cooking the books is a old thing. most companies do it esp when they want more profits, but when a country does it pretty much hits global level.
as for the repayment, we all know that they wouldnt or couldnt have paid regardless based on past history.