Problem with bank withdrawing money.

Hey all. Last week I went to the AIB atm to withdraw money. I selected to withdraw €90, however the machine wouldn't dispense this and it said something along the lines of "error €00000". So I canceled it and took my card out and went inside to make a withdrawal of €50. They said in there that the machine was probably out of 20 euro notes.

Anyway. When I looked at my statements today I noticed it debited the €90 from my account listed as the ATM. I did not actually take this out due to the error and its shortly followed by the transaction I got from inside the bank so they're not the same.

Will this money be put back into my account or will I have to go down and talk to them, will they look for evidence that I tried to make the transaction? Im really annoyed over this & I'm 100% sure I didn't leave money in the machine or anything.