The final solution was disabling the ATM network durimg night, except the ones located in safe places. Showing you are drawing money in a hurry in a lone hut in the night was a bad idea, anyways.
Unfortunately, whenever governments try to solve the wrench attack, they do so by removing the end user's control over their own stuff.
Why did they visit multiple ATMs?
To be honest, in my country I can also transfer all my liquid money (not countings stocks etc) with just my phone. The difference is that i'm not afraid of being kidnapped (it's safe here). And anyway, how much does normal person hold in the cash account? People living month-to-month don't have much anyway, while people with savings usually keep them in stocks/bonds/etc.