Poor Service from Standard Bank ***** department failing to provide Answers after 7 days

For more than 2 weeks without getting any positive feedback from Standard bank ***** Department. an online payment was made on my Credit card without any authentication or verification that I am the one who was making the payment, not even a notification from the Bank. Standard bank is failing me now whereas they don't have security in place to authorize any payment. as the result I was a victim of the Cyber Crime and they can't even provide me with the answers as to how did this happened. I did not even loose my cards Thina B