Unethical company - go elsewhere

Booked via the internet from Australia - then realised I had made an error in my flight. I tried to change online, but it would not accept the change and referred me to ring their contact centre. The contact centre did not answer a number of times so I tried their chat line - it also did not operate outside EU time, so I had to wait until the chat line opened. I am some 9 hours ahead of Norway time so morning is evening in Australia.
I contacted via chat as soon as they opened, but the chat line referred me to the contact centre where I was on hold for some time before being denied because I had not made my change within 4 hours!! I complained to their HO, but simply received an email restating their Terms and Conditions and a refusal and advising that they do not subscribe to the EU dispute resolution service.
My flight was not for another 4 months, but they will keep my money. This is a complete SHAM and speaks volumes for Norwegian's ethics. Fly with someone that operates ethically.