Is Standard Bank open to hacking or ID *****

I realized that my mailing address for my C Card statement was changed with out my knowledge. When I contacted the bank to find out how authirised this and how it happened I was told a system glitch, that the bank has had from Jan 2015 is to blame. I didn't accept this and requested a senior member call me to explain. I indicated my concern that my bank details are being send to unknown people which could lead to Identity ***** and a loss to myself or this could be hacking of their system. It become clear that the bank did not take ID ***** serious as they dismissed this possibility immediately even though my statement was send to an unknown party. They indicated that a senior staff member will call me within a day. It is now day 2 and still no response from the bank. My *** given to me by Mpumie on the 18th doesn't seem to exist when I called today to find out about this matter, which further indicates how serious the bank is taking this threat to customer security. If this was an existing problem from Jan. you would expect the bank to ensure that the mail from them, with sensitive information will not go to the wrong place? How many statement are at the wrong address?