<prompt> Human: So I went to the ATM at a gas station the other day and tried to withdraw 160. It gave me an error and said the transaction was canceled. I tried again and it dispensed the 160. I go to check my balance today and noticed it was way off. Turns out, it withdrew both 160 from my account with only dispensing on the latter time I tried.How do I go about getting this corrected? I bank with landmark credit union. Should I just contact them tomorrow?  <response>: You call the bank, they file a Reg-E Dispute, it is a standard dispute for ATM transactions. It takes time to get resolved. 