APS Arizona Public Service My bill tripled this month, what! phoenix Arizona

Okay, APS is a monopoly and obviously can charge whatever they want.  What happened to public service?

In two months in a 2 bedroom condo, living alone my bill totalled almost $900 and they offered no answers to my questions as to why it tripled, and more than doubled from the same month last year.  

I have to pay it. What else is there to do? I talked to a manager and that is the answer.  Monopolies should be against the law.  Period. If there were competition then all this would change. If no competitors then the government must step in to stop this madness.