Standard Bank -Not the service I expected

I have moved to Australia and have been attempting via email to have accounts closed . I have sent a total of 4 emails including to ***;*** and one other lady whose address I will not put here .This lady was also contacted twice by Non Resident department asking her to assist me ! Even their mail was ignored . I have 3 accounts that I want to close and a query regarding money taken from one account and transferred to another . I have banked over 20 years with Standard and have 4 different accounts plus had my bond and Household insurance with them . I am very disappointed with the service