Double Charged and given stories to get my money

Last week Wednesday an SMS notification came in on my phone while I was at home. It was from my bank, notifying me of payment made to KFC Parklands. I panicked and called my bank ***** line thinking my card could've been cloned as I wasn't at KFC at the time. The bank told me it was a delayed transaction from a purchase I made at the KFC on 5 March 2016....it only went off my account on the 13 April 2016. I let it go thinking ok it's all fine. The following evening at about the same time as the night before another SMS came in for the same amount. Now I was really panicking thinking *** are they gonna be taking money from my account everyday? Called the ***** line again, and they confirmed I have been double charged for the same transaction. Following day I went in to the bank to get a print out showing these transactions from my account. Saturday I took it to the KFC and spoke to the manager. He said head office is closed so someone will call me on Monday and I will be refunded on Tuesday. Yesterday I get a call from the manager saying I should bring proof that my bank account is my account, I said no. I just want my money back. They didn't need proof when they took it.