No support from call center

I have been a customer with Standard Bank for more than 20 years and I am now considering closing all my individual and company accounts. After about seven calls to the call center no-one can help me to link my account with my online accounting package. It seems that no one understand or were trained to give support on the linking of accounts with online accounting packages. They also promised that someone will phone me back, but no luck. Then I have to phone again and go through the same process.