A couple of years ago I used the Ulster Bank ATM on Dame St to withdraw money. I keyed in €20 - and no money came out.
When I checked my bank statement online a couple of days later - my account had been debited with the €20, despite my not actually receiving it. I raised this issue with AIB (whom my account was with) - and they told me to fill in a form so that they could investigate the matter. A couple of weeks later, I get correspondance from AIB saying that they checked the UB ATM, and the cash in the machine balanced with all transactions made - therefore, the €20 had been issued by the ATM.... and that was that. So I don't know what happened to that money... the bank didn't report any tampering with the machine... so I can only assume that they just pocketed it. You may think it was 'only €20'... but hey €20 IS €20.
OnTheUp, I hope for your sake you will get your money back 'cos €200 is ALOT of dosh!