I had a similar situation in Brunswick Maine recently. I bought my husband's chainsaw, and wanted to split the payment between debit and charge cards. The cashier had no idea this was not possible so the entire payment came out of my bank acct. When i protested, he told me this was not so, and I should not worry. But I continued to protest to complete the transaction, and the cashier tried to back out of the transaction, only to realize the computer would not let him as I had gone too far in our transaction. After phoning numerous superiors, a man on the phone told him to "unplug the machine" to void the transaction. And he did!!! He then told me the transaction was completely nullified and I will need to purchase the chainsaw again, using a gift card and a credit card. So, I bought a gift card, used it as my cash contribution, and then gave my Visa card for the balance.
The next day, I found a debit charge to my bank account online. Called the mgr immediately and she said not to worry, the charge would come off in a day or two, kind of like it was a cyber charge 'ghost' in the machine that would work itself out. Another day later, no deletion of the charge. I called again and demanded my money back. The same mgr again told me the charge would come off automatically, now suggesting up to a few days was typical.
I went down to the business office and had to not only argue with the mgr, but also with the operations mgr, and be put on the phone with a customer solutions expert who had not clue in hell what was up.
The mgr told me she would review any overdraft fees if they occurred as a result of this error, but that was it. They could not give me money and then be 'out the money twice' if the other charge disappeared!!! So I was supposed to trust Sears to do the right thing without any paper trail or written admission of error or money due, but I was not entitled to the same courtesy or benefit of the doubt. When finally I said, "Fine, and are you going to pay for my groceries til your error is fixed????" that is when the mgr issued me a credit to my debit card, which by the way, two days later is yet to be registered by my bank! Thank GOD for overdraft protection!