Unauthorized online transaction nightmare

Useless bank ever,I was on online shopping for replay and I stopped before confirming that the website is true or not and I tried canceling before confirmation and while canceling the transaction was approved without my confirmation.i immediately called the bank to get the money back and stop the transaction and I was reprimanded like a child and told that they will investigate while people are eating my money. My loyalty to them is reaching an end of term. Money taken is R1634.