Unfair outcome of ***** investigation.

I was recently ****med by someone who supposedly called from the Standard Bank ***** line. They had all my details, including my Card details and account number. They attempted to ***** approximately R 71000.00. I rep**** no to all the ***** messages coming up on my phone, but two transactions, one for R1.00 and one for approximately R 6700.00 went through. How was I able to stop all but these two transactions with the exact same actions. Standard Bank ***** department now refuse to reimburse, as they say this was not their doing. I question that, as my details were leaked, and I believe it was by someone in the Bank. Also the ***** Department is not taking the matter into consideration, but merely the two transactions that were successful on the part of the **********. Why did my reply of "NO" on the ***** message not stop these transactions? Something does not add up.