Not willing to negotiate

After being happy with my car insurance for 10 months, I started renting a house in January and added home contents insurance to my policy. As I changed my home address and started a new job (so my daytime parking address changed), I ended up with a reduced premium.<br> <br> I then received my yearly policy update yesterday, which proposed a 48% increase (to the premium I just had changed in January). After querying this, I was told that the increase could be reduced, but it would still be about a 40% increase. When I mentioned that this kind of increase seemed ridiculous to me, and that I should rather look into the discounted premiums offered to me my by new employer, I was told that in fact, this kind of increase is not ridiculous due to increased costs of everything else.<br> <br> This is after I maintained a fairly civil attitude throughout the call. It seems that the only way to get fair service in this country is to throw a tantrum so that management takes note.