I'm having a battle with HSBC in the UK at the moment and can't get past canned customer support responses either.
If there is a security issue with your card, HSBC Fraud department will send you a text, telling you to call them.
The text comes from an unknown number. The number you are told to call is not listed on their website anywhere.
At the same time they are sending letters to customers warning about how to protect from phishing attacks.
I've been trying to explain to them, that they are training their customers to accept phishing attacks, but they are having none of it.
Yes, I understand that they don't want to publicise their special number on the website - but at least put it on an unlinked page, so that if a customer visits hsbc.com and searches for the number it comes up in the results.
I really don't understand these people.