Card transactions not authorized

I have never experienced card ***** until I moved to standard bank. With this scary traumatic experienced I have not received any communication from standard bank. Cheque card Transaction went off from my account which I did not authorized. Reported this to standard bank ***** department for investigation on the 27th October I've called twice already to find out about the investigation with no feedback. Nothing. There only reason I moved to standard bank was because of my employer using standard bank. Biggest mistakes of my life. Worse part is not receiving any communication. How can I be sure that my card won't be used again.