<prompt> Human: So Im trying to get a snack from a vending machine during a break that had from class. Apparently the machine was out of order and didnt read my card and so I gave up, pressed the end button so I wouldnt be charged and then made my way back to class. I had a solid 40 in my account at the time and throughout the day I probably spent at most 15. Went through my day, checked my account and saw myself down to 18. Checked my statements but there werent any unusual purchased so I just thought I counted the money wrong and went to bed. Next day I go to class and a little before the start I check my account and my balance is -16. Due to the terms of my debit card I my balance cant be at 0. I have to have the required balance to pay for something or else I cant purchase said item. In my mind the only thing that could make any sense is the vending machine reading my card info but not reading when I input the End button and people making transactions without throughout the day and would explain the weird numbers I was seeing when I checked my account. The only thing is that Im still not seeing anything on my statement and so I cant file for a claim. Can a malfunctioning vending machine just take my money and not show up on my statement? This is like some weird financial creepy pasta and Im just super confused.  <response>: Call your bank and ask them! Maybe it was some pending transactions? 