Poor service regarding ***** investiogations

I have been a customer of standard bank for the past 16 years and I was recently contacted by someone claiming to be with the standard bank credit cad division. they had access to all my information and I therefore assumed this was legitimately standard bank calling me. when I investigated further I found that it was not standard bank. I am concerned about how standard bank Is sharing all of my information and they will not even help me to investigate this from their ***** division. they keep sending me from pillar to post and putting me on hold constantly. I will be considering moving my banking else were after this dreadful experience. your call center needs a serious upgrade on how to assist clients. its really appalling