Double billing - will not reverse transaction

Good day,<br> I visited your Rooihuiskraal Virgin Active branch earlier today, and ordered two peanut butter bomb smoothies. I swiped my card the first time, it was declined due to a connection error. I swiped my card a second time, entered my pin and the terminal disconnected thereafter. I swiped my card a third time, entered my pin and the transaction was successful. Upon checking my notifications from ABSA, i saw that one transaction was successful at 12:39 and another transaction for the same amount was successful at 12:41. When I approached the supervisor to obtain a refund for the duplicate transaction, I was advised that it was \Kauai policy"that the bank will reverse the second transaction. I should check my account"