So, you, of all people, are expecting this relationship between you and the carrion-eaters to result in an equitable, ethical, rational resolution to your satisfaction?
Are you feeling well?
They are under strict orders to hold out, never substantially lowering the rate. They fully expect their savvy customers to move around to other carriers every few years. Like people have done with other financial instruments such as credit cards to get the best interest rate. This is where the odds pay off for them, in that most people will pay more to avoid the inconvenience of having to shop around.
Good luck just the same, but those people at the branch office likely have no authority to offer the changes you seek.
Additionally, over the years I've noticed how, when I call another company for a quote, they most often will pull up all my (formerly personal) information from some shared resource and merely confirm my address and the VINs for the vehicles I want quoted. These companies are participating together in a rigged game, sharing your details and history. It wouldn't surprise me that they might be able to look at what you are paying now, so they know where to aim to get your business.
I think Tesla insurance may offer some solace to car owners eventually, as they can custom tailor an insurance product to a specific driver's history and habits.
Robotaxi will be all that more enticing to anyone clever enough to discount not only the purchase and maintenance cost of their current auto ownership but by adding in the cost of auto insurance as well it could be a lever for many folks to no longer own a car.