I'm so disappointed

I'm so disappointed, I've never thought that a highly respected bank like standard bank would have such a bad customer service, I sent them an email in February concerning my father's home loan account which I did not get any response let alone an acknowledgement of saying an email was received, the only email I received was in April only after I have sent several emails requesting for feedback, saying there's no attachments, which I did attach. I sent another email with those attachments again till today there's no feedback. Called several times to follow up only to find out that you will hold without getting to any consultant until you out of airtime, I'm very disappointed in this pathetic service