7 years of paying for what?

I'm a client of Miway and while I've had no issues with them for the past 7 years with regards to claiming due to me not having any claims...my insurance premium is currently at 725 which is good. My car is a 2011 model. I have no history of accidents and the last claim was was in 2011. And my car was ******. I was sent my new contract on what my premium will cost. What would warrant an increase to 771 when my car is depreciating? With an excess of 6700. That is insane. 7 years of no claim and 6700 excess? For my premium to increase. Then I see they have a cash back option which I'm not eligible for because someone reversed into my car and his insurance required a no claim form from Miway so his insurance could fix the car. That again is insanity to me. Just shows insurance is a *******. I'll be looking for a new company to insure me.