72% increase in homeowner's insurance

[lb36362492]

My homeowner's premium is going up by 72%.  When I questioned my agent he gave all the standard answers (inflation, more national disasters, etc)  He also said that Arizona allows a "random" allocation of these increases across their customers.  So "some homeowners got a decrease, some got 30% increase and  yours happens to be 72%."  He emphasized that the increases are random and homes next door to each other could have totally different percent changes even though the carrier is the came.

My question:  Is this "random" application of increases true?  Should I file a complaint with the Arizona regulatory agency?