I asked this, because a friend of mine recently opened a bank account in DR. When he was issued the ATM card, he tried to use it, and the machine took it.
After a long debate with the bank employees, who did not want to help him,the bank manager told him the reason the machine took the ATM is because it thought this was fraud.
He said no one uses their ATM Card in DR because of the high conversion rates from dollar to peso.
(he has a dollarized account) I just realized as I am writting this, that if he had a peso account, the machine would probably not eat his card.