Yes. Had two such issues. Initial quote they increased saying My employer stopped providing co-branded insurance and they have to go with third party which was significantly higher. Nothing can be done for that unfortunate case. They gave me an option to find my own insurance vendor, but when I shop around everything looked same or worse than whatever NL provided. So decided not worth the pain.
Second one was when the tesla delivery got extended to 2024 and NSW rule changed where Customer have to claim back stamp duty after taking the delivery in effect increasing the final quote. Well that is equivalant to getting some ~3k interest free loan for 5 years. Decided to push that to own homeloan and chew it up.