Extremely Poor Business banking services

Who is working at Standard bank anymore? Business banking service absolutely pathetic... no replay in 3 weeks from my "so-called" allocated business banker or the Tshwane team (to whom which I was referred to when she was on leave and she always seem to be "out-of-office"). The Business banking call service line unable to assist in matter.... contacted complains department and no response. What do I need to do to get assistance or answers when not even branches can do anythings.... who do I contact now? VERY very frustrated - wil never refer somebody to Standard bank after being loyal client for more than 15 years, with 3 business accounts, investments accounts, 2 savings accounts.....this is they way they treat loyal clients then I don't know....