Tasko sweets loftus

Loftus branch. Cashier accidentally overcharged me at the till after paying with debit card with 600%. Luckily he noticed and informed me. Not sure how to reverse the payment on the card machine, he was determined to figure it out. He then tried a few things on the card machine and think that he cancelled the payment on the card machine but was not sure if that was correctly done and called the store manager. He then tried to explain to her what he did to reverse the payment, but even I could not understand what he said. The store manager requested to speak to me over the phone. I politely greeted. The store manager was awfully rude from the onset and informed me that the payment was cancelled and the funds will reflect in my bank account in three working days. Due to her rude attitude, I told her that it will affect my cashflow and I cant really go three days without the overcharged amount, not even mentioning the transaction possibly not reversed correctly. To my surprise, she told me that it is out of her control and she cant give me cash because then she will suffer a loss. She then said i need to sort it out with my bank. I understand that the cashier made a mistake and had no issue with that. What really upset me was the way the store manager handles the situation and how rude she was. She did not even apologise for the inconvenience, nor did she offer any other solution as to what I should do if the funds do not reflect back in my bank account. I do not recommend this store.