Bad customer Service

I just called Standard Bank Customer service Simmonds and spoke to Bianca/Blanch Buys i'm still shocked by the level of customer service i received . I wanted assistance with my cheque account cause for some odd reasons i cannot transact on my account she asked me the security check and unfortunately i got one of her questions wrong. which led her to being unable to assist me. i then requested to speak with her supervisor and she refused even after i told her that it was not in connection with my account she still said no. as a standard bank customer I'm disappointed in the way she handled the query and she even refused to give me a reference number. i might not be one of your top private banker clients but BAD SERVICE is just not acceptable i will be changing my bank due to this .