********** activities on my account

Hi there...I am a customer of a very reputable bank in SA.There was ********** activities on my account...Lodged a complaint and have been waiting ever since for them to get back to me...Today money was deducted from my investment account without my permission to pay for the ***** that was commited ..So I am.actually being sent from.pillar to post by this bank as well as their investigators..What steps can I take? What do I do? Is it possible for a bank to deduct money from my investment account and what does the TELLER TRANSFER mean? Please help me.. What do I do?