bank account details still not amended after several visits

We have been trying to change members details on the business account with standard bank at Southgate for the last 2 weeks, we had outstanding docs initially and have submitted all that is required, I made at least 4 trips to the branch, and to date we cannot use the internet banking. salaries not paid and accounts due because they have not changed the details of resigned members as requested. what makes it even worse, you cannot get hold of anyone on the phone and the call centre cannot take messages for the consultant. I am now forced to go to the branch again, which is ridiculous. I am appalled and very frustrated with all this, esp at month end. How we do we get hold of anyone at the branches, without taking time off work over and over to visit the branch for the same thing....